diff --git a/crates/re_types_builder/src/codegen/python.rs b/crates/re_types_builder/src/codegen/python.rs
index 27957e35b0fb..f8178f6c7ba3 100644
--- a/crates/re_types_builder/src/codegen/python.rs
+++ b/crates/re_types_builder/src/codegen/python.rs
@@ -789,9 +789,9 @@ fn code_for_union(
     };
 
     let inner_type = if field_types.len() > 1 {
-        format!("Union[{}]", field_types.iter().join(", "))
+        field_types.iter().join(" | ")
     } else {
-        field_types.iter().next().unwrap().to_string()
+        field_types.first().unwrap().to_string()
     };
 
     // components and datatypes have converters only if manually provided
@@ -1060,44 +1060,39 @@ fn quote_native_types_method_from_obj(objects: &Objects, obj: &Object) -> String
 fn quote_aliases_from_object(obj: &Object) -> String {
     assert_ne!(obj.kind, ObjectKind::Archetype);
 
-    let aliases = obj.try_get_attr::<String>(ATTR_PYTHON_ALIASES);
-    let array_aliases = obj
-        .try_get_attr::<String>(ATTR_PYTHON_ARRAY_ALIASES)
-        .unwrap_or_default();
+    let aliases = obj.get_attr_list(ATTR_PYTHON_ALIASES);
+    let array_aliases = obj.get_attr_list(ATTR_PYTHON_ARRAY_ALIASES);
 
     let name = &obj.name;
 
     let mut code = String::new();
 
     code.push_unindented_text(
-        &if let Some(aliases) = aliases {
+        &if aliases.is_empty() {
+            format!("{name}Like = {name}")
+        } else {
             format!(
                 r#"
                 if TYPE_CHECKING:
-                    {name}Like = Union[
-                        {name},
-                        {aliases}
-                    ]
+                    {name}Like = {name} | {}
                 else:
                     {name}Like = Any
                 "#,
+                aliases.iter().join(" | ")
             )
-        } else {
-            format!("{name}Like = {name}")
         },
         1,
     );
 
     code.push_unindented_text(
-        format!(
-            r#"
-            {name}ArrayLike = Union[
-                {name},
-                Sequence[{name}Like],
-                {array_aliases}
-            ]
-            "#,
-        ),
+        if array_aliases.is_empty() {
+            format!("{name}ArrayLike = {name} | Sequence[{name}Like]")
+        } else {
+            format!(
+                "{name}ArrayLike = {name} | Sequence[{name}Like] | {}",
+                array_aliases.iter().join(" | ")
+            )
+        },
         0,
     );
 
@@ -1108,34 +1103,33 @@ fn quote_aliases_from_object(obj: &Object) -> String {
 /// included.
 fn quote_union_aliases_from_object<'a>(
     obj: &Object,
-    mut field_types: impl Iterator<Item = &'a String>,
+    field_types: impl Iterator<Item = &'a String>,
 ) -> String {
     assert_ne!(obj.kind, ObjectKind::Archetype);
 
-    let aliases = obj.try_get_attr::<String>(ATTR_PYTHON_ALIASES);
-    let array_aliases = obj
-        .try_get_attr::<String>(ATTR_PYTHON_ARRAY_ALIASES)
-        .unwrap_or_default();
+    let field_types = field_types.collect_vec();
+
+    let aliases = obj.get_attr_list(ATTR_PYTHON_ALIASES);
+    let array_aliases = obj.get_attr_list(ATTR_PYTHON_ARRAY_ALIASES);
 
     let name = &obj.name;
 
-    let union_fields = field_types.join(",");
-    let aliases = if let Some(aliases) = aliases {
-        aliases
-    } else {
-        String::new()
-    };
+    let like = std::iter::once(name)
+        .chain(field_types.iter().copied())
+        .chain(aliases.iter())
+        .join(" | ");
+
+    let array_like = std::iter::once(name)
+        .chain(field_types)
+        .chain(std::iter::once(&format!("Sequence[{name}Like]")))
+        .chain(array_aliases.iter())
+        .join(" | ");
 
     unindent::unindent(&format!(
         r#"
             if TYPE_CHECKING:
-                {name}Like = Union[
-                    {name},{union_fields},{aliases}
-                ]
-                {name}ArrayLike = Union[
-                    {name},{union_fields},
-                    Sequence[{name}Like],{array_aliases}
-                ]
+                {name}Like = {like}
+                {name}ArrayLike = {array_like}
             else:
                 {name}Like = Any
                 {name}ArrayLike = Any
diff --git a/crates/re_types_builder/src/objects.rs b/crates/re_types_builder/src/objects.rs
index 97c858a9926e..60a5d525e0a5 100644
--- a/crates/re_types_builder/src/objects.rs
+++ b/crates/re_types_builder/src/objects.rs
@@ -612,6 +612,15 @@ impl Object {
         self.attrs.try_get(self.fqname.as_str(), name)
     }
 
+    pub fn get_attr_list(&self, name: &str) -> Vec<String> {
+        split_list(
+            &self
+                .attrs
+                .try_get::<String>(self.fqname.as_str(), name)
+                .unwrap_or_default(),
+        )
+    }
+
     pub fn is_attr_set(&self, name: impl AsRef<str>) -> bool {
         self.attrs.has(name)
     }
@@ -1333,3 +1342,77 @@ fn filepath_from_declaration_file(
     .canonicalize_utf8()
     .expect("Failed to canonicalize declaration path")
 }
+
+fn split_list(str: &str) -> Vec<String> {
+    let mut bow = 0;
+    let mut angles = 0;
+    let mut curly = 0;
+    let mut square = 0;
+
+    let mut results = Vec::new();
+    let mut current = String::new();
+
+    for c in str.chars() {
+        match c {
+            '<' => angles += 1,
+            '>' => angles -= 1,
+
+            '(' => bow += 1,
+            ')' => bow -= 1,
+
+            '{' => curly += 1,
+            '}' => curly -= 1,
+
+            '[' => square += 1,
+            ']' => square -= 1,
+
+            ',' if angles == 0 && bow == 0 && curly == 0 && square == 0 => {
+                results.push(current.trim().to_owned());
+                current = String::new();
+                continue; // skip the comma
+            }
+            _ => {}
+        }
+        current.push(c);
+    }
+
+    current = current.trim().to_owned();
+    if !current.is_empty() {
+        results.push(current);
+    }
+    results
+}
+
+#[test]
+fn test_split_list() {
+    assert_eq!(split_list(""), Vec::<String>::new());
+    assert_eq!(split_list(" hello "), vec!["hello".to_owned()]);
+    assert_eq!(
+        split_list("hello, there"),
+        vec!["hello".to_owned(), "there".to_owned()]
+    );
+
+    // Python:
+    assert_eq!(
+        split_list("int, Tuple[int, str], Tuple[int, str, datatypes.Rgba32Like]"),
+        vec![
+            "int".to_owned(),
+            "Tuple[int, str]".to_owned(),
+            "Tuple[int, str, datatypes.Rgba32Like]".to_owned(),
+        ]
+    );
+    assert_eq!(
+        split_list("int, Sequence[Union[int, float]], npt.NDArray[Union[np.uint8, np.float32, np.float64]]"),
+        vec![
+            "int".to_owned(),
+            "Sequence[Union[int, float]]".to_owned(),
+            "npt.NDArray[Union[np.uint8, np.float32, np.float64]]".to_owned(),
+        ]
+    );
+
+    // Rust:
+    assert_eq!(
+        split_list("HashMap<int, String>, bool"),
+        vec!["HashMap<int, String>".to_owned(), "bool".to_owned()]
+    );
+}
diff --git a/crates/re_types_core/src/components/clear_is_recursive.rs b/crates/re_types_core/src/components/clear_is_recursive.rs
index f22b3ed3218b..4f18a216d059 100644
--- a/crates/re_types_core/src/components/clear_is_recursive.rs
+++ b/crates/re_types_core/src/components/clear_is_recursive.rs
@@ -21,7 +21,7 @@ use crate::SerializationResult;
 use crate::{ComponentBatch, MaybeOwnedComponentBatch};
 use crate::{DeserializationError, DeserializationResult};
 
-/// **Component**: Configures how a clear operation should behave - recursive or not.
+/// **Component**: Configures how a clear operation should behave - recursive or not?
 #[derive(Clone, Debug, Copy, PartialEq, Eq)]
 pub struct ClearIsRecursive(
     /// If true, also clears all recursive children entities.
diff --git a/rerun_cpp/src/rerun/archetypes/segmentation_image.hpp b/rerun_cpp/src/rerun/archetypes/segmentation_image.hpp
index 4513e669b0cb..848c2126b7be 100644
--- a/rerun_cpp/src/rerun/archetypes/segmentation_image.hpp
+++ b/rerun_cpp/src/rerun/archetypes/segmentation_image.hpp
@@ -18,7 +18,7 @@
 
 namespace rerun {
     namespace archetypes {
-        /// **Archetype**: An image made up of integer class-ids.
+        /// **Archetype**: An image made up of integer class-ids
         ///
         /// The shape of the `TensorData` must be mappable to an `HxW` tensor.
         /// Each pixel corresponds to a depth value in units specified by meter.
diff --git a/rerun_cpp/src/rerun/components/clear_is_recursive.hpp b/rerun_cpp/src/rerun/components/clear_is_recursive.hpp
index 42ae6555a20a..5714596a87ac 100644
--- a/rerun_cpp/src/rerun/components/clear_is_recursive.hpp
+++ b/rerun_cpp/src/rerun/components/clear_is_recursive.hpp
@@ -17,7 +17,7 @@ namespace arrow {
 
 namespace rerun {
     namespace components {
-        /// **Component**: Configures how a clear operation should behave - recursive or not.
+        /// **Component**: Configures how a clear operation should behave - recursive or not?
         struct ClearIsRecursive {
             /// If true, also clears all recursive children entities.
             bool recursive;
diff --git a/rerun_cpp/src/rerun/components/text.hpp b/rerun_cpp/src/rerun/components/text.hpp
index ce7757d99eee..01f7d87a274c 100644
--- a/rerun_cpp/src/rerun/components/text.hpp
+++ b/rerun_cpp/src/rerun/components/text.hpp
@@ -20,7 +20,7 @@ namespace arrow {
 
 namespace rerun {
     namespace components {
-        /// **Component**: A string of text, e.g. for labels and text documents.
+        /// **Component**: A string of text, e.g. for labels and text documents
         struct Text {
             rerun::datatypes::Utf8 value;
 
diff --git a/rerun_py/rerun_sdk/rerun/blueprint/auto_space_views.py b/rerun_py/rerun_sdk/rerun/blueprint/auto_space_views.py
index c2529872ce8b..cace85395f26 100644
--- a/rerun_py/rerun_sdk/rerun/blueprint/auto_space_views.py
+++ b/rerun_py/rerun_sdk/rerun/blueprint/auto_space_views.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Sequence, Union
+from typing import Any, Sequence
 
 from attrs import define, field
 
@@ -38,10 +38,7 @@ def __init__(self: Any, enabled: AutoSpaceViewsLike):
 
 
 AutoSpaceViewsLike = AutoSpaceViews
-AutoSpaceViewsArrayLike = Union[
-    AutoSpaceViews,
-    Sequence[AutoSpaceViewsLike],
-]
+AutoSpaceViewsArrayLike = AutoSpaceViews | Sequence[AutoSpaceViewsLike]
 
 
 class AutoSpaceViewsType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/blueprint/panel_view.py b/rerun_py/rerun_sdk/rerun/blueprint/panel_view.py
index efaed31438d7..3d6391db4a68 100644
--- a/rerun_py/rerun_sdk/rerun/blueprint/panel_view.py
+++ b/rerun_py/rerun_sdk/rerun/blueprint/panel_view.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Sequence, Union
+from typing import Any, Sequence
 
 from attrs import define, field
 
@@ -32,10 +32,7 @@ def __init__(self: Any, is_expanded: PanelViewLike):
 
 
 PanelViewLike = PanelView
-PanelViewArrayLike = Union[
-    PanelView,
-    Sequence[PanelViewLike],
-]
+PanelViewArrayLike = PanelView | Sequence[PanelViewLike]
 
 
 class PanelViewType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/blueprint/space_view_component.py b/rerun_py/rerun_sdk/rerun/blueprint/space_view_component.py
index 3290cc13c532..b33abd9f3695 100644
--- a/rerun_py/rerun_sdk/rerun/blueprint/space_view_component.py
+++ b/rerun_py/rerun_sdk/rerun/blueprint/space_view_component.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Sequence, Union
+from typing import Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -47,10 +47,7 @@ def __array__(self, dtype: npt.DTypeLike = None) -> npt.NDArray[Any]:
 
 
 SpaceViewComponentLike = SpaceViewComponent
-SpaceViewComponentArrayLike = Union[
-    SpaceViewComponent,
-    Sequence[SpaceViewComponentLike],
-]
+SpaceViewComponentArrayLike = SpaceViewComponent | Sequence[SpaceViewComponentLike]
 
 
 class SpaceViewComponentType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/blueprint/space_view_maximized.py b/rerun_py/rerun_sdk/rerun/blueprint/space_view_maximized.py
index 9c37ae078c58..a65d26de7008 100644
--- a/rerun_py/rerun_sdk/rerun/blueprint/space_view_maximized.py
+++ b/rerun_py/rerun_sdk/rerun/blueprint/space_view_maximized.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Sequence, Union
+from typing import Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -47,10 +47,7 @@ def __array__(self, dtype: npt.DTypeLike = None) -> npt.NDArray[Any]:
 
 
 SpaceViewMaximizedLike = SpaceViewMaximized
-SpaceViewMaximizedArrayLike = Union[
-    SpaceViewMaximized,
-    Sequence[SpaceViewMaximizedLike],
-]
+SpaceViewMaximizedArrayLike = SpaceViewMaximized | Sequence[SpaceViewMaximizedLike]
 
 
 class SpaceViewMaximizedType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/blueprint/viewport_layout.py b/rerun_py/rerun_sdk/rerun/blueprint/viewport_layout.py
index 1318326d6dde..8c774379ba56 100644
--- a/rerun_py/rerun_sdk/rerun/blueprint/viewport_layout.py
+++ b/rerun_py/rerun_sdk/rerun/blueprint/viewport_layout.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Sequence, Union
+from typing import Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -67,10 +67,7 @@ def __init__(self: Any, space_view_keys: npt.ArrayLike, tree: npt.ArrayLike, aut
 
 
 ViewportLayoutLike = ViewportLayout
-ViewportLayoutArrayLike = Union[
-    ViewportLayout,
-    Sequence[ViewportLayoutLike],
-]
+ViewportLayoutArrayLike = ViewportLayout | Sequence[ViewportLayoutLike]
 
 
 class ViewportLayoutType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/components/annotation_context.py b/rerun_py/rerun_sdk/rerun/components/annotation_context.py
index a464b76038fa..4264e2f8625e 100644
--- a/rerun_py/rerun_sdk/rerun/components/annotation_context.py
+++ b/rerun_py/rerun_sdk/rerun/components/annotation_context.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, Union
+from typing import TYPE_CHECKING, Any, Sequence
 
 import pyarrow as pa
 from attrs import define, field
@@ -57,16 +57,13 @@ def __init__(self: Any, class_map: AnnotationContextLike):
 
 
 if TYPE_CHECKING:
-    AnnotationContextLike = Union[
-        AnnotationContext, datatypes.ClassDescriptionArrayLike, Sequence[datatypes.ClassDescriptionMapElemLike]
-    ]
+    AnnotationContextLike = (
+        AnnotationContext | datatypes.ClassDescriptionArrayLike | Sequence[datatypes.ClassDescriptionMapElemLike]
+    )
 else:
     AnnotationContextLike = Any
 
-AnnotationContextArrayLike = Union[
-    AnnotationContext,
-    Sequence[AnnotationContextLike],
-]
+AnnotationContextArrayLike = AnnotationContext | Sequence[AnnotationContextLike]
 
 
 class AnnotationContextType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/components/blob.py b/rerun_py/rerun_sdk/rerun/components/blob.py
index 24429e755f91..916765f2f22f 100644
--- a/rerun_py/rerun_sdk/rerun/components/blob.py
+++ b/rerun_py/rerun_sdk/rerun/components/blob.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, Union
+from typing import TYPE_CHECKING, Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -39,11 +39,11 @@ def __array__(self, dtype: npt.DTypeLike = None) -> npt.NDArray[Any]:
 
 
 if TYPE_CHECKING:
-    BlobLike = Union[Blob, bytes, npt.NDArray[np.uint8]]
+    BlobLike = Blob | bytes | npt.NDArray[np.uint8]
 else:
     BlobLike = Any
 
-BlobArrayLike = Union[Blob, Sequence[BlobLike], bytes, npt.NDArray[np.uint8]]
+BlobArrayLike = Blob | Sequence[BlobLike] | bytes | npt.NDArray[np.uint8]
 
 
 class BlobType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/components/clear_is_recursive.py b/rerun_py/rerun_sdk/rerun/components/clear_is_recursive.py
index 9ca096e23eef..64558d31c0e2 100644
--- a/rerun_py/rerun_sdk/rerun/components/clear_is_recursive.py
+++ b/rerun_py/rerun_sdk/rerun/components/clear_is_recursive.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, Union
+from typing import TYPE_CHECKING, Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -26,7 +26,7 @@
 
 @define(init=False)
 class ClearIsRecursive(ClearIsRecursiveExt):
-    """**Component**: Configures how a clear operation should behave - recursive or not."""
+    """**Component**: Configures how a clear operation should behave - recursive or not?."""
 
     def __init__(self: Any, recursive: ClearIsRecursiveLike):
         """
@@ -48,11 +48,11 @@ def __init__(self: Any, recursive: ClearIsRecursiveLike):
 
 
 if TYPE_CHECKING:
-    ClearIsRecursiveLike = Union[ClearIsRecursive, bool]
+    ClearIsRecursiveLike = ClearIsRecursive | bool
 else:
     ClearIsRecursiveLike = Any
 
-ClearIsRecursiveArrayLike = Union[ClearIsRecursive, Sequence[ClearIsRecursiveLike], bool, npt.NDArray[np.bool_]]
+ClearIsRecursiveArrayLike = ClearIsRecursive | Sequence[ClearIsRecursiveLike] | bool | npt.NDArray[np.bool_]
 
 
 class ClearIsRecursiveType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/components/depth_meter.py b/rerun_py/rerun_sdk/rerun/components/depth_meter.py
index 5790b36dd1c5..0e9496287195 100644
--- a/rerun_py/rerun_sdk/rerun/components/depth_meter.py
+++ b/rerun_py/rerun_sdk/rerun/components/depth_meter.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, Union
+from typing import TYPE_CHECKING, Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -39,11 +39,11 @@ def __float__(self) -> float:
 
 
 if TYPE_CHECKING:
-    DepthMeterLike = Union[DepthMeter, float]
+    DepthMeterLike = DepthMeter | float
 else:
     DepthMeterLike = Any
 
-DepthMeterArrayLike = Union[DepthMeter, Sequence[DepthMeterLike], float, npt.NDArray[np.float32]]
+DepthMeterArrayLike = DepthMeter | Sequence[DepthMeterLike] | float | npt.NDArray[np.float32]
 
 
 class DepthMeterType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/components/disconnected_space.py b/rerun_py/rerun_sdk/rerun/components/disconnected_space.py
index a2ab1520b1ce..7b752977f097 100644
--- a/rerun_py/rerun_sdk/rerun/components/disconnected_space.py
+++ b/rerun_py/rerun_sdk/rerun/components/disconnected_space.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, Union
+from typing import TYPE_CHECKING, Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -43,11 +43,11 @@ class DisconnectedSpace(DisconnectedSpaceExt):
 
 
 if TYPE_CHECKING:
-    DisconnectedSpaceLike = Union[DisconnectedSpace, bool]
+    DisconnectedSpaceLike = DisconnectedSpace | bool
 else:
     DisconnectedSpaceLike = Any
 
-DisconnectedSpaceArrayLike = Union[DisconnectedSpace, Sequence[DisconnectedSpaceLike], bool, npt.NDArray[np.bool_]]
+DisconnectedSpaceArrayLike = DisconnectedSpace | Sequence[DisconnectedSpaceLike] | bool | npt.NDArray[np.bool_]
 
 
 class DisconnectedSpaceType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/components/draw_order.py b/rerun_py/rerun_sdk/rerun/components/draw_order.py
index 94afba3e6db8..b6bafbf5f29b 100644
--- a/rerun_py/rerun_sdk/rerun/components/draw_order.py
+++ b/rerun_py/rerun_sdk/rerun/components/draw_order.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, Union
+from typing import TYPE_CHECKING, Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -47,11 +47,11 @@ def __float__(self) -> float:
 
 
 if TYPE_CHECKING:
-    DrawOrderLike = Union[DrawOrder, float]
+    DrawOrderLike = DrawOrder | float
 else:
     DrawOrderLike = Any
 
-DrawOrderArrayLike = Union[DrawOrder, Sequence[DrawOrderLike], float, npt.NDArray[np.float32]]
+DrawOrderArrayLike = DrawOrder | Sequence[DrawOrderLike] | float | npt.NDArray[np.float32]
 
 
 class DrawOrderType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/components/instance_key.py b/rerun_py/rerun_sdk/rerun/components/instance_key.py
index dc77c6192180..08685fa08c82 100644
--- a/rerun_py/rerun_sdk/rerun/components/instance_key.py
+++ b/rerun_py/rerun_sdk/rerun/components/instance_key.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, Union
+from typing import TYPE_CHECKING, Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -39,11 +39,11 @@ def __int__(self) -> int:
 
 
 if TYPE_CHECKING:
-    InstanceKeyLike = Union[InstanceKey, int]
+    InstanceKeyLike = InstanceKey | int
 else:
     InstanceKeyLike = Any
 
-InstanceKeyArrayLike = Union[InstanceKey, Sequence[InstanceKeyLike], int, npt.NDArray[np.uint64]]
+InstanceKeyArrayLike = InstanceKey | Sequence[InstanceKeyLike] | int | npt.NDArray[np.uint64]
 
 
 class InstanceKeyType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/components/line_strip2d.py b/rerun_py/rerun_sdk/rerun/components/line_strip2d.py
index 890305408587..5186055c1ea2 100644
--- a/rerun_py/rerun_sdk/rerun/components/line_strip2d.py
+++ b/rerun_py/rerun_sdk/rerun/components/line_strip2d.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, Union
+from typing import TYPE_CHECKING, Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -46,11 +46,11 @@ def __init__(self: Any, points: LineStrip2DLike):
 
 
 if TYPE_CHECKING:
-    LineStrip2DLike = Union[LineStrip2D, datatypes.Vec2DArrayLike, npt.NDArray[np.float32]]
+    LineStrip2DLike = LineStrip2D | datatypes.Vec2DArrayLike | npt.NDArray[np.float32]
 else:
     LineStrip2DLike = Any
 
-LineStrip2DArrayLike = Union[LineStrip2D, Sequence[LineStrip2DLike], npt.NDArray[np.float32]]
+LineStrip2DArrayLike = LineStrip2D | Sequence[LineStrip2DLike] | npt.NDArray[np.float32]
 
 
 class LineStrip2DType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/components/line_strip3d.py b/rerun_py/rerun_sdk/rerun/components/line_strip3d.py
index 463a85bc6325..90c48f33d744 100644
--- a/rerun_py/rerun_sdk/rerun/components/line_strip3d.py
+++ b/rerun_py/rerun_sdk/rerun/components/line_strip3d.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, Union
+from typing import TYPE_CHECKING, Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -46,11 +46,11 @@ def __init__(self: Any, points: LineStrip3DLike):
 
 
 if TYPE_CHECKING:
-    LineStrip3DLike = Union[LineStrip3D, datatypes.Vec3DArrayLike, npt.NDArray[np.float32]]
+    LineStrip3DLike = LineStrip3D | datatypes.Vec3DArrayLike | npt.NDArray[np.float32]
 else:
     LineStrip3DLike = Any
 
-LineStrip3DArrayLike = Union[LineStrip3D, Sequence[LineStrip3DLike], npt.NDArray[np.float32]]
+LineStrip3DArrayLike = LineStrip3D | Sequence[LineStrip3DLike] | npt.NDArray[np.float32]
 
 
 class LineStrip3DType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/components/radius.py b/rerun_py/rerun_sdk/rerun/components/radius.py
index bb6da280bc9e..44f8873b59ab 100644
--- a/rerun_py/rerun_sdk/rerun/components/radius.py
+++ b/rerun_py/rerun_sdk/rerun/components/radius.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, Union
+from typing import TYPE_CHECKING, Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -39,11 +39,11 @@ def __float__(self) -> float:
 
 
 if TYPE_CHECKING:
-    RadiusLike = Union[Radius, float]
+    RadiusLike = Radius | float
 else:
     RadiusLike = Any
 
-RadiusArrayLike = Union[Radius, Sequence[RadiusLike], float, npt.ArrayLike]
+RadiusArrayLike = Radius | Sequence[RadiusLike] | float | npt.ArrayLike
 
 
 class RadiusType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/components/scalar.py b/rerun_py/rerun_sdk/rerun/components/scalar.py
index b46f396d7bee..7a9d64b807aa 100644
--- a/rerun_py/rerun_sdk/rerun/components/scalar.py
+++ b/rerun_py/rerun_sdk/rerun/components/scalar.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, Union
+from typing import TYPE_CHECKING, Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -43,11 +43,11 @@ def __float__(self) -> float:
 
 
 if TYPE_CHECKING:
-    ScalarLike = Union[Scalar, float]
+    ScalarLike = Scalar | float
 else:
     ScalarLike = Any
 
-ScalarArrayLike = Union[Scalar, Sequence[ScalarLike], float, npt.NDArray[np.float64]]
+ScalarArrayLike = Scalar | Sequence[ScalarLike] | float | npt.NDArray[np.float64]
 
 
 class ScalarType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/components/scalar_scattering.py b/rerun_py/rerun_sdk/rerun/components/scalar_scattering.py
index 3d05b70643c9..a2a2d21de2b9 100644
--- a/rerun_py/rerun_sdk/rerun/components/scalar_scattering.py
+++ b/rerun_py/rerun_sdk/rerun/components/scalar_scattering.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, Union
+from typing import TYPE_CHECKING, Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -38,11 +38,11 @@ def __init__(self: Any, scattered: ScalarScatteringLike):
 
 
 if TYPE_CHECKING:
-    ScalarScatteringLike = Union[ScalarScattering, bool]
+    ScalarScatteringLike = ScalarScattering | bool
 else:
     ScalarScatteringLike = Any
 
-ScalarScatteringArrayLike = Union[ScalarScattering, Sequence[ScalarScatteringLike], bool, npt.NDArray[np.bool_]]
+ScalarScatteringArrayLike = ScalarScattering | Sequence[ScalarScatteringLike] | bool | npt.NDArray[np.bool_]
 
 
 class ScalarScatteringType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/components/view_coordinates.py b/rerun_py/rerun_sdk/rerun/components/view_coordinates.py
index e1270822e9de..3854ab0c0287 100644
--- a/rerun_py/rerun_sdk/rerun/components/view_coordinates.py
+++ b/rerun_py/rerun_sdk/rerun/components/view_coordinates.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, Union
+from typing import TYPE_CHECKING, Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -71,11 +71,11 @@ def __array__(self, dtype: npt.DTypeLike = None) -> npt.NDArray[Any]:
 
 
 if TYPE_CHECKING:
-    ViewCoordinatesLike = Union[ViewCoordinates, npt.ArrayLike]
+    ViewCoordinatesLike = ViewCoordinates | npt.ArrayLike
 else:
     ViewCoordinatesLike = Any
 
-ViewCoordinatesArrayLike = Union[ViewCoordinates, Sequence[ViewCoordinatesLike], npt.ArrayLike]
+ViewCoordinatesArrayLike = ViewCoordinates | Sequence[ViewCoordinatesLike] | npt.ArrayLike
 
 
 class ViewCoordinatesType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/datatypes/angle.py b/rerun_py/rerun_sdk/rerun/datatypes/angle.py
index d9bbd1bb301d..c43aec532ef4 100644
--- a/rerun_py/rerun_sdk/rerun/datatypes/angle.py
+++ b/rerun_py/rerun_sdk/rerun/datatypes/angle.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Literal, Sequence, Union
+from typing import TYPE_CHECKING, Any, Literal, Sequence
 
 import pyarrow as pa
 from attrs import define, field
@@ -35,15 +35,8 @@ class Angle(AngleExt):
 
 
 if TYPE_CHECKING:
-    AngleLike = Union[
-        Angle,
-        float,
-    ]
-    AngleArrayLike = Union[
-        Angle,
-        float,
-        Sequence[AngleLike],
-    ]
+    AngleLike = Angle | float
+    AngleArrayLike = Angle | float | Sequence[AngleLike]
 else:
     AngleLike = Any
     AngleArrayLike = Any
diff --git a/rerun_py/rerun_sdk/rerun/datatypes/annotation_info.py b/rerun_py/rerun_sdk/rerun/datatypes/annotation_info.py
index fa23948aea2f..4f5e946248e5 100644
--- a/rerun_py/rerun_sdk/rerun/datatypes/annotation_info.py
+++ b/rerun_py/rerun_sdk/rerun/datatypes/annotation_info.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, Tuple, Union
+from typing import TYPE_CHECKING, Any, Sequence, Tuple
 
 import pyarrow as pa
 from attrs import define, field
@@ -92,14 +92,11 @@ def __init__(
 
 
 if TYPE_CHECKING:
-    AnnotationInfoLike = Union[AnnotationInfo, int, Tuple[int, str], Tuple[int, str, datatypes.Rgba32Like]]
+    AnnotationInfoLike = AnnotationInfo | int | Tuple[int, str] | Tuple[int, str, datatypes.Rgba32Like]
 else:
     AnnotationInfoLike = Any
 
-AnnotationInfoArrayLike = Union[
-    AnnotationInfo,
-    Sequence[AnnotationInfoLike],
-]
+AnnotationInfoArrayLike = AnnotationInfo | Sequence[AnnotationInfoLike]
 
 
 class AnnotationInfoType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/datatypes/class_description.py b/rerun_py/rerun_sdk/rerun/datatypes/class_description.py
index 93d09b845883..cedd11306f33 100644
--- a/rerun_py/rerun_sdk/rerun/datatypes/class_description.py
+++ b/rerun_py/rerun_sdk/rerun/datatypes/class_description.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, Union
+from typing import TYPE_CHECKING, Any, Sequence
 
 import pyarrow as pa
 from attrs import define, field
@@ -71,14 +71,11 @@ class ClassDescription(ClassDescriptionExt):
 
 
 if TYPE_CHECKING:
-    ClassDescriptionLike = Union[ClassDescription, datatypes.AnnotationInfoLike]
+    ClassDescriptionLike = ClassDescription | datatypes.AnnotationInfoLike
 else:
     ClassDescriptionLike = Any
 
-ClassDescriptionArrayLike = Union[
-    ClassDescription,
-    Sequence[ClassDescriptionLike],
-]
+ClassDescriptionArrayLike = ClassDescription | Sequence[ClassDescriptionLike]
 
 
 class ClassDescriptionType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/datatypes/class_description_map_elem.py b/rerun_py/rerun_sdk/rerun/datatypes/class_description_map_elem.py
index 6899ccdad8e7..6b2605054175 100644
--- a/rerun_py/rerun_sdk/rerun/datatypes/class_description_map_elem.py
+++ b/rerun_py/rerun_sdk/rerun/datatypes/class_description_map_elem.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, Union
+from typing import TYPE_CHECKING, Any, Sequence
 
 import pyarrow as pa
 from attrs import define, field
@@ -69,14 +69,11 @@ def __init__(self: Any, class_id: datatypes.ClassIdLike, class_description: data
 
 
 if TYPE_CHECKING:
-    ClassDescriptionMapElemLike = Union[ClassDescriptionMapElem, datatypes.ClassDescriptionLike]
+    ClassDescriptionMapElemLike = ClassDescriptionMapElem | datatypes.ClassDescriptionLike
 else:
     ClassDescriptionMapElemLike = Any
 
-ClassDescriptionMapElemArrayLike = Union[
-    ClassDescriptionMapElem,
-    Sequence[ClassDescriptionMapElemLike],
-]
+ClassDescriptionMapElemArrayLike = ClassDescriptionMapElem | Sequence[ClassDescriptionMapElemLike]
 
 
 class ClassDescriptionMapElemType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/datatypes/class_id.py b/rerun_py/rerun_sdk/rerun/datatypes/class_id.py
index 3151fd6b4e3f..14b008cca8e6 100644
--- a/rerun_py/rerun_sdk/rerun/datatypes/class_id.py
+++ b/rerun_py/rerun_sdk/rerun/datatypes/class_id.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, Union
+from typing import TYPE_CHECKING, Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -39,11 +39,11 @@ def __int__(self) -> int:
 
 
 if TYPE_CHECKING:
-    ClassIdLike = Union[ClassId, int]
+    ClassIdLike = ClassId | int
 else:
     ClassIdLike = Any
 
-ClassIdArrayLike = Union[ClassId, Sequence[ClassIdLike], int, npt.ArrayLike]
+ClassIdArrayLike = ClassId | Sequence[ClassIdLike] | int | npt.ArrayLike
 
 
 class ClassIdType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/datatypes/float32.py b/rerun_py/rerun_sdk/rerun/datatypes/float32.py
index 767a44b56be5..fd640fb72b60 100644
--- a/rerun_py/rerun_sdk/rerun/datatypes/float32.py
+++ b/rerun_py/rerun_sdk/rerun/datatypes/float32.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Sequence, Union
+from typing import Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -38,10 +38,7 @@ def __float__(self) -> float:
 
 
 Float32Like = Float32
-Float32ArrayLike = Union[
-    Float32,
-    Sequence[Float32Like],
-]
+Float32ArrayLike = Float32 | Sequence[Float32Like]
 
 
 class Float32Type(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/datatypes/keypoint_id.py b/rerun_py/rerun_sdk/rerun/datatypes/keypoint_id.py
index f425119db6a6..ce4e95cbd37b 100644
--- a/rerun_py/rerun_sdk/rerun/datatypes/keypoint_id.py
+++ b/rerun_py/rerun_sdk/rerun/datatypes/keypoint_id.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, Union
+from typing import TYPE_CHECKING, Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -46,11 +46,11 @@ def __int__(self) -> int:
 
 
 if TYPE_CHECKING:
-    KeypointIdLike = Union[KeypointId, int]
+    KeypointIdLike = KeypointId | int
 else:
     KeypointIdLike = Any
 
-KeypointIdArrayLike = Union[KeypointId, Sequence[KeypointIdLike], int, npt.ArrayLike]
+KeypointIdArrayLike = KeypointId | Sequence[KeypointIdLike] | int | npt.ArrayLike
 
 
 class KeypointIdType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/datatypes/keypoint_pair.py b/rerun_py/rerun_sdk/rerun/datatypes/keypoint_pair.py
index 9bb7c7de502b..8ab8b4d78c5a 100644
--- a/rerun_py/rerun_sdk/rerun/datatypes/keypoint_pair.py
+++ b/rerun_py/rerun_sdk/rerun/datatypes/keypoint_pair.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, Union
+from typing import TYPE_CHECKING, Any, Sequence
 
 import pyarrow as pa
 from attrs import define, field
@@ -62,14 +62,11 @@ def __init__(self: Any, keypoint0: datatypes.KeypointIdLike, keypoint1: datatype
 
 
 if TYPE_CHECKING:
-    KeypointPairLike = Union[KeypointPair, Sequence[datatypes.KeypointIdLike]]
+    KeypointPairLike = KeypointPair | Sequence[datatypes.KeypointIdLike]
 else:
     KeypointPairLike = Any
 
-KeypointPairArrayLike = Union[
-    KeypointPair,
-    Sequence[KeypointPairLike],
-]
+KeypointPairArrayLike = KeypointPair | Sequence[KeypointPairLike]
 
 
 class KeypointPairType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/datatypes/mat3x3.py b/rerun_py/rerun_sdk/rerun/datatypes/mat3x3.py
index 309ade65c025..e768da8b9284 100644
--- a/rerun_py/rerun_sdk/rerun/datatypes/mat3x3.py
+++ b/rerun_py/rerun_sdk/rerun/datatypes/mat3x3.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, Union
+from typing import TYPE_CHECKING, Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -71,14 +71,11 @@ def __array__(self, dtype: npt.DTypeLike = None) -> npt.NDArray[Any]:
 
 
 if TYPE_CHECKING:
-    Mat3x3Like = Union[Mat3x3, npt.ArrayLike]
+    Mat3x3Like = Mat3x3 | npt.ArrayLike
 else:
     Mat3x3Like = Any
 
-Mat3x3ArrayLike = Union[
-    Mat3x3,
-    Sequence[Mat3x3Like],
-]
+Mat3x3ArrayLike = Mat3x3 | Sequence[Mat3x3Like]
 
 
 class Mat3x3Type(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/datatypes/mat4x4.py b/rerun_py/rerun_sdk/rerun/datatypes/mat4x4.py
index 68b3397147d5..25f48252906d 100644
--- a/rerun_py/rerun_sdk/rerun/datatypes/mat4x4.py
+++ b/rerun_py/rerun_sdk/rerun/datatypes/mat4x4.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, Union
+from typing import TYPE_CHECKING, Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -73,14 +73,11 @@ def __array__(self, dtype: npt.DTypeLike = None) -> npt.NDArray[Any]:
 
 
 if TYPE_CHECKING:
-    Mat4x4Like = Union[Mat4x4, npt.ArrayLike]
+    Mat4x4Like = Mat4x4 | npt.ArrayLike
 else:
     Mat4x4Like = Any
 
-Mat4x4ArrayLike = Union[
-    Mat4x4,
-    Sequence[Mat4x4Like],
-]
+Mat4x4ArrayLike = Mat4x4 | Sequence[Mat4x4Like]
 
 
 class Mat4x4Type(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/datatypes/material.py b/rerun_py/rerun_sdk/rerun/datatypes/material.py
index d25fe6342347..522599c49588 100644
--- a/rerun_py/rerun_sdk/rerun/datatypes/material.py
+++ b/rerun_py/rerun_sdk/rerun/datatypes/material.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Sequence, Union
+from typing import Any, Sequence
 
 import pyarrow as pa
 from attrs import define, field
@@ -54,10 +54,7 @@ def __init__(self: Any, albedo_factor: datatypes.Rgba32Like | None = None):
 
 
 MaterialLike = Material
-MaterialArrayLike = Union[
-    Material,
-    Sequence[MaterialLike],
-]
+MaterialArrayLike = Material | Sequence[MaterialLike]
 
 
 class MaterialType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/datatypes/mesh_properties.py b/rerun_py/rerun_sdk/rerun/datatypes/mesh_properties.py
index 97439d0321a2..dbdbd2d52b62 100644
--- a/rerun_py/rerun_sdk/rerun/datatypes/mesh_properties.py
+++ b/rerun_py/rerun_sdk/rerun/datatypes/mesh_properties.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Sequence, Union
+from typing import Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -59,10 +59,7 @@ def __array__(self, dtype: npt.DTypeLike = None) -> npt.NDArray[Any]:
 
 
 MeshPropertiesLike = MeshProperties
-MeshPropertiesArrayLike = Union[
-    MeshProperties,
-    Sequence[MeshPropertiesLike],
-]
+MeshPropertiesArrayLike = MeshProperties | Sequence[MeshPropertiesLike]
 
 
 class MeshPropertiesType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/datatypes/quaternion.py b/rerun_py/rerun_sdk/rerun/datatypes/quaternion.py
index 075197483858..d062fd5d48c2 100644
--- a/rerun_py/rerun_sdk/rerun/datatypes/quaternion.py
+++ b/rerun_py/rerun_sdk/rerun/datatypes/quaternion.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Sequence, Union
+from typing import Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -40,10 +40,7 @@ def __array__(self, dtype: npt.DTypeLike = None) -> npt.NDArray[Any]:
 
 
 QuaternionLike = Quaternion
-QuaternionArrayLike = Union[
-    Quaternion,
-    Sequence[QuaternionLike],
-]
+QuaternionArrayLike = Quaternion | Sequence[QuaternionLike]
 
 
 class QuaternionType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/datatypes/rgba32.py b/rerun_py/rerun_sdk/rerun/datatypes/rgba32.py
index 00920c088612..70a26d925318 100644
--- a/rerun_py/rerun_sdk/rerun/datatypes/rgba32.py
+++ b/rerun_py/rerun_sdk/rerun/datatypes/rgba32.py
@@ -50,11 +50,11 @@ def __int__(self) -> int:
 
 
 if TYPE_CHECKING:
-    Rgba32Like = Union[Rgba32, int, Sequence[Union[int, float]], npt.NDArray[Union[np.uint8, np.float32, np.float64]]]
+    Rgba32Like = Rgba32 | int | Sequence[Union[int, float]] | npt.NDArray[Union[np.uint8, np.float32, np.float64]]
 else:
     Rgba32Like = Any
 
-Rgba32ArrayLike = Union[Rgba32, Sequence[Rgba32Like], int, npt.ArrayLike]
+Rgba32ArrayLike = Rgba32 | Sequence[Rgba32Like] | int | npt.ArrayLike
 
 
 class Rgba32Type(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/datatypes/rotation3d.py b/rerun_py/rerun_sdk/rerun/datatypes/rotation3d.py
index 616b9aba15d0..3c54164174c8 100644
--- a/rerun_py/rerun_sdk/rerun/datatypes/rotation3d.py
+++ b/rerun_py/rerun_sdk/rerun/datatypes/rotation3d.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, SupportsFloat, Union
+from typing import TYPE_CHECKING, Any, Sequence, SupportsFloat
 
 import pyarrow as pa
 from attrs import define, field
@@ -34,13 +34,8 @@ class Rotation3D(Rotation3DExt):
 
 
 if TYPE_CHECKING:
-    Rotation3DLike = Union[Rotation3D, datatypes.Quaternion, datatypes.RotationAxisAngle, Sequence[SupportsFloat]]
-    Rotation3DArrayLike = Union[
-        Rotation3D,
-        datatypes.Quaternion,
-        datatypes.RotationAxisAngle,
-        Sequence[Rotation3DLike],
-    ]
+    Rotation3DLike = Rotation3D | datatypes.Quaternion | datatypes.RotationAxisAngle | Sequence[SupportsFloat]
+    Rotation3DArrayLike = Rotation3D | datatypes.Quaternion | datatypes.RotationAxisAngle | Sequence[Rotation3DLike]
 else:
     Rotation3DLike = Any
     Rotation3DArrayLike = Any
diff --git a/rerun_py/rerun_sdk/rerun/datatypes/rotation_axis_angle.py b/rerun_py/rerun_sdk/rerun/datatypes/rotation_axis_angle.py
index 9b431991f13d..ca1050ed28b9 100644
--- a/rerun_py/rerun_sdk/rerun/datatypes/rotation_axis_angle.py
+++ b/rerun_py/rerun_sdk/rerun/datatypes/rotation_axis_angle.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Sequence, Union
+from typing import Sequence
 
 import pyarrow as pa
 from attrs import define, field
@@ -54,10 +54,7 @@ class RotationAxisAngle(RotationAxisAngleExt):
 
 
 RotationAxisAngleLike = RotationAxisAngle
-RotationAxisAngleArrayLike = Union[
-    RotationAxisAngle,
-    Sequence[RotationAxisAngleLike],
-]
+RotationAxisAngleArrayLike = RotationAxisAngle | Sequence[RotationAxisAngleLike]
 
 
 class RotationAxisAngleType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/datatypes/scale3d.py b/rerun_py/rerun_sdk/rerun/datatypes/scale3d.py
index c913d7f0f896..cce47f0adbe3 100644
--- a/rerun_py/rerun_sdk/rerun/datatypes/scale3d.py
+++ b/rerun_py/rerun_sdk/rerun/datatypes/scale3d.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, Union
+from typing import TYPE_CHECKING, Any, Sequence
 
 import pyarrow as pa
 from attrs import define, field
@@ -47,13 +47,8 @@ class Scale3D(Scale3DExt):
 
 
 if TYPE_CHECKING:
-    Scale3DLike = Union[Scale3D, datatypes.Vec3D, float, datatypes.Vec3DLike]
-    Scale3DArrayLike = Union[
-        Scale3D,
-        datatypes.Vec3D,
-        float,
-        Sequence[Scale3DLike],
-    ]
+    Scale3DLike = Scale3D | datatypes.Vec3D | float | datatypes.Vec3DLike
+    Scale3DArrayLike = Scale3D | datatypes.Vec3D | float | Sequence[Scale3DLike]
 else:
     Scale3DLike = Any
     Scale3DArrayLike = Any
diff --git a/rerun_py/rerun_sdk/rerun/datatypes/tensor_buffer.py b/rerun_py/rerun_sdk/rerun/datatypes/tensor_buffer.py
index 2746bc468324..e82e113cbcb7 100644
--- a/rerun_py/rerun_sdk/rerun/datatypes/tensor_buffer.py
+++ b/rerun_py/rerun_sdk/rerun/datatypes/tensor_buffer.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Literal, Sequence, Union
+from typing import TYPE_CHECKING, Any, Literal, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -63,35 +63,35 @@ class TensorBuffer(TensorBufferExt):
 
 
 if TYPE_CHECKING:
-    TensorBufferLike = Union[
-        TensorBuffer,
-        npt.NDArray[np.float16],
-        npt.NDArray[np.float32],
-        npt.NDArray[np.float64],
-        npt.NDArray[np.int16],
-        npt.NDArray[np.int32],
-        npt.NDArray[np.int64],
-        npt.NDArray[np.int8],
-        npt.NDArray[np.uint16],
-        npt.NDArray[np.uint32],
-        npt.NDArray[np.uint64],
-        npt.NDArray[np.uint8],
-    ]
-    TensorBufferArrayLike = Union[
-        TensorBuffer,
-        npt.NDArray[np.float16],
-        npt.NDArray[np.float32],
-        npt.NDArray[np.float64],
-        npt.NDArray[np.int16],
-        npt.NDArray[np.int32],
-        npt.NDArray[np.int64],
-        npt.NDArray[np.int8],
-        npt.NDArray[np.uint16],
-        npt.NDArray[np.uint32],
-        npt.NDArray[np.uint64],
-        npt.NDArray[np.uint8],
-        Sequence[TensorBufferLike],
-    ]
+    TensorBufferLike = (
+        TensorBuffer
+        | npt.NDArray[np.float16]
+        | npt.NDArray[np.float32]
+        | npt.NDArray[np.float64]
+        | npt.NDArray[np.int16]
+        | npt.NDArray[np.int32]
+        | npt.NDArray[np.int64]
+        | npt.NDArray[np.int8]
+        | npt.NDArray[np.uint16]
+        | npt.NDArray[np.uint32]
+        | npt.NDArray[np.uint64]
+        | npt.NDArray[np.uint8]
+    )
+    TensorBufferArrayLike = (
+        TensorBuffer
+        | npt.NDArray[np.float16]
+        | npt.NDArray[np.float32]
+        | npt.NDArray[np.float64]
+        | npt.NDArray[np.int16]
+        | npt.NDArray[np.int32]
+        | npt.NDArray[np.int64]
+        | npt.NDArray[np.int8]
+        | npt.NDArray[np.uint16]
+        | npt.NDArray[np.uint32]
+        | npt.NDArray[np.uint64]
+        | npt.NDArray[np.uint8]
+        | Sequence[TensorBufferLike]
+    )
 else:
     TensorBufferLike = Any
     TensorBufferArrayLike = Any
diff --git a/rerun_py/rerun_sdk/rerun/datatypes/tensor_data.py b/rerun_py/rerun_sdk/rerun/datatypes/tensor_data.py
index dae3c8e326a9..453c1e6267ed 100644
--- a/rerun_py/rerun_sdk/rerun/datatypes/tensor_data.py
+++ b/rerun_py/rerun_sdk/rerun/datatypes/tensor_data.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, Union
+from typing import TYPE_CHECKING, Any, Sequence
 
 import numpy.typing as npt
 import pyarrow as pa
@@ -45,11 +45,11 @@ class TensorData(TensorDataExt):
 
 
 if TYPE_CHECKING:
-    TensorDataLike = Union[TensorData, npt.ArrayLike]
+    TensorDataLike = TensorData | npt.ArrayLike
 else:
     TensorDataLike = Any
 
-TensorDataArrayLike = Union[TensorData, Sequence[TensorDataLike], npt.ArrayLike]
+TensorDataArrayLike = TensorData | Sequence[TensorDataLike] | npt.ArrayLike
 
 
 class TensorDataType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/datatypes/tensor_dimension.py b/rerun_py/rerun_sdk/rerun/datatypes/tensor_dimension.py
index 431acb92c280..e5743ffe20f8 100644
--- a/rerun_py/rerun_sdk/rerun/datatypes/tensor_dimension.py
+++ b/rerun_py/rerun_sdk/rerun/datatypes/tensor_dimension.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Sequence, Union
+from typing import Any, Sequence
 
 import pyarrow as pa
 from attrs import define, field
@@ -55,10 +55,7 @@ def __init__(self: Any, size: int, name: str | None = None):
 
 
 TensorDimensionLike = TensorDimension
-TensorDimensionArrayLike = Union[
-    TensorDimension,
-    Sequence[TensorDimensionLike],
-]
+TensorDimensionArrayLike = TensorDimension | Sequence[TensorDimensionLike]
 
 
 class TensorDimensionType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/datatypes/transform3d.py b/rerun_py/rerun_sdk/rerun/datatypes/transform3d.py
index de7b19767b24..fcdec8fbd709 100644
--- a/rerun_py/rerun_sdk/rerun/datatypes/transform3d.py
+++ b/rerun_py/rerun_sdk/rerun/datatypes/transform3d.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, Union
+from typing import TYPE_CHECKING, Any, Sequence
 
 import pyarrow as pa
 from attrs import define, field
@@ -32,17 +32,10 @@ class Transform3D(Transform3DExt):
 
 
 if TYPE_CHECKING:
-    Transform3DLike = Union[
-        Transform3D,
-        datatypes.TranslationAndMat3x3,
-        datatypes.TranslationRotationScale3D,
-    ]
-    Transform3DArrayLike = Union[
-        Transform3D,
-        datatypes.TranslationAndMat3x3,
-        datatypes.TranslationRotationScale3D,
-        Sequence[Transform3DLike],
-    ]
+    Transform3DLike = Transform3D | datatypes.TranslationAndMat3x3 | datatypes.TranslationRotationScale3D
+    Transform3DArrayLike = (
+        Transform3D | datatypes.TranslationAndMat3x3 | datatypes.TranslationRotationScale3D | Sequence[Transform3DLike]
+    )
 else:
     Transform3DLike = Any
     Transform3DArrayLike = Any
diff --git a/rerun_py/rerun_sdk/rerun/datatypes/translation_and_mat3x3.py b/rerun_py/rerun_sdk/rerun/datatypes/translation_and_mat3x3.py
index ed6d4da44c4f..81160a36496b 100644
--- a/rerun_py/rerun_sdk/rerun/datatypes/translation_and_mat3x3.py
+++ b/rerun_py/rerun_sdk/rerun/datatypes/translation_and_mat3x3.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Sequence, Union
+from typing import Sequence
 
 import pyarrow as pa
 from attrs import define, field
@@ -79,10 +79,7 @@ class TranslationAndMat3x3(TranslationAndMat3x3Ext):
 
 
 TranslationAndMat3x3Like = TranslationAndMat3x3
-TranslationAndMat3x3ArrayLike = Union[
-    TranslationAndMat3x3,
-    Sequence[TranslationAndMat3x3Like],
-]
+TranslationAndMat3x3ArrayLike = TranslationAndMat3x3 | Sequence[TranslationAndMat3x3Like]
 
 
 class TranslationAndMat3x3Type(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/datatypes/translation_rotation_scale3d.py b/rerun_py/rerun_sdk/rerun/datatypes/translation_rotation_scale3d.py
index 983eb5486fa4..92e553a4072a 100644
--- a/rerun_py/rerun_sdk/rerun/datatypes/translation_rotation_scale3d.py
+++ b/rerun_py/rerun_sdk/rerun/datatypes/translation_rotation_scale3d.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Sequence, Union
+from typing import Sequence
 
 import pyarrow as pa
 from attrs import define, field
@@ -83,10 +83,7 @@ class TranslationRotationScale3D(TranslationRotationScale3DExt):
 
 
 TranslationRotationScale3DLike = TranslationRotationScale3D
-TranslationRotationScale3DArrayLike = Union[
-    TranslationRotationScale3D,
-    Sequence[TranslationRotationScale3DLike],
-]
+TranslationRotationScale3DArrayLike = TranslationRotationScale3D | Sequence[TranslationRotationScale3DLike]
 
 
 class TranslationRotationScale3DType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/datatypes/uint32.py b/rerun_py/rerun_sdk/rerun/datatypes/uint32.py
index 478a66c2ec2a..132c4f9b2606 100644
--- a/rerun_py/rerun_sdk/rerun/datatypes/uint32.py
+++ b/rerun_py/rerun_sdk/rerun/datatypes/uint32.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Sequence, Union
+from typing import Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -38,10 +38,7 @@ def __int__(self) -> int:
 
 
 UInt32Like = UInt32
-UInt32ArrayLike = Union[
-    UInt32,
-    Sequence[UInt32Like],
-]
+UInt32ArrayLike = UInt32 | Sequence[UInt32Like]
 
 
 class UInt32Type(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/datatypes/utf8.py b/rerun_py/rerun_sdk/rerun/datatypes/utf8.py
index 88d08a992cba..9130b5a61b65 100644
--- a/rerun_py/rerun_sdk/rerun/datatypes/utf8.py
+++ b/rerun_py/rerun_sdk/rerun/datatypes/utf8.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, Union
+from typing import TYPE_CHECKING, Any, Sequence
 
 import pyarrow as pa
 from attrs import define, field
@@ -33,11 +33,11 @@ def __str__(self) -> str:
 
 
 if TYPE_CHECKING:
-    Utf8Like = Union[Utf8, str]
+    Utf8Like = Utf8 | str
 else:
     Utf8Like = Any
 
-Utf8ArrayLike = Union[Utf8, Sequence[Utf8Like], str, Sequence[str]]
+Utf8ArrayLike = Utf8 | Sequence[Utf8Like] | str | Sequence[str]
 
 
 class Utf8Type(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/datatypes/uvec2d.py b/rerun_py/rerun_sdk/rerun/datatypes/uvec2d.py
index e1270bd38f55..4f209e4083e2 100644
--- a/rerun_py/rerun_sdk/rerun/datatypes/uvec2d.py
+++ b/rerun_py/rerun_sdk/rerun/datatypes/uvec2d.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, Union
+from typing import TYPE_CHECKING, Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -38,13 +38,13 @@ def __array__(self, dtype: npt.DTypeLike = None) -> npt.NDArray[Any]:
 
 
 if TYPE_CHECKING:
-    UVec2DLike = Union[UVec2D, npt.NDArray[Any], npt.ArrayLike, Sequence[int]]
+    UVec2DLike = UVec2D | npt.NDArray[Any] | npt.ArrayLike | Sequence[int]
 else:
     UVec2DLike = Any
 
-UVec2DArrayLike = Union[
-    UVec2D, Sequence[UVec2DLike], npt.NDArray[Any], npt.ArrayLike, Sequence[Sequence[int]], Sequence[int]
-]
+UVec2DArrayLike = (
+    UVec2D | Sequence[UVec2DLike] | npt.NDArray[Any] | npt.ArrayLike | Sequence[Sequence[int]] | Sequence[int]
+)
 
 
 class UVec2DType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/datatypes/uvec3d.py b/rerun_py/rerun_sdk/rerun/datatypes/uvec3d.py
index af9fcab87062..e5e06fc75532 100644
--- a/rerun_py/rerun_sdk/rerun/datatypes/uvec3d.py
+++ b/rerun_py/rerun_sdk/rerun/datatypes/uvec3d.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, Union
+from typing import TYPE_CHECKING, Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -38,13 +38,13 @@ def __array__(self, dtype: npt.DTypeLike = None) -> npt.NDArray[Any]:
 
 
 if TYPE_CHECKING:
-    UVec3DLike = Union[UVec3D, npt.NDArray[Any], npt.ArrayLike, Sequence[int]]
+    UVec3DLike = UVec3D | npt.NDArray[Any] | npt.ArrayLike | Sequence[int]
 else:
     UVec3DLike = Any
 
-UVec3DArrayLike = Union[
-    UVec3D, Sequence[UVec3DLike], npt.NDArray[Any], npt.ArrayLike, Sequence[Sequence[int]], Sequence[int]
-]
+UVec3DArrayLike = (
+    UVec3D | Sequence[UVec3DLike] | npt.NDArray[Any] | npt.ArrayLike | Sequence[Sequence[int]] | Sequence[int]
+)
 
 
 class UVec3DType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/datatypes/uvec4d.py b/rerun_py/rerun_sdk/rerun/datatypes/uvec4d.py
index 64e8860ce172..5d99552d1ca6 100644
--- a/rerun_py/rerun_sdk/rerun/datatypes/uvec4d.py
+++ b/rerun_py/rerun_sdk/rerun/datatypes/uvec4d.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, Union
+from typing import TYPE_CHECKING, Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -38,13 +38,13 @@ def __array__(self, dtype: npt.DTypeLike = None) -> npt.NDArray[Any]:
 
 
 if TYPE_CHECKING:
-    UVec4DLike = Union[UVec4D, npt.NDArray[Any], npt.ArrayLike, Sequence[int]]
+    UVec4DLike = UVec4D | npt.NDArray[Any] | npt.ArrayLike | Sequence[int]
 else:
     UVec4DLike = Any
 
-UVec4DArrayLike = Union[
-    UVec4D, Sequence[UVec4DLike], npt.NDArray[Any], npt.ArrayLike, Sequence[Sequence[int]], Sequence[int]
-]
+UVec4DArrayLike = (
+    UVec4D | Sequence[UVec4DLike] | npt.NDArray[Any] | npt.ArrayLike | Sequence[Sequence[int]] | Sequence[int]
+)
 
 
 class UVec4DType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/datatypes/vec2d.py b/rerun_py/rerun_sdk/rerun/datatypes/vec2d.py
index 0160c09fd5e0..d439ba4e9ebe 100644
--- a/rerun_py/rerun_sdk/rerun/datatypes/vec2d.py
+++ b/rerun_py/rerun_sdk/rerun/datatypes/vec2d.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, Union
+from typing import TYPE_CHECKING, Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -39,13 +39,13 @@ def __array__(self, dtype: npt.DTypeLike = None) -> npt.NDArray[Any]:
 
 
 if TYPE_CHECKING:
-    Vec2DLike = Union[Vec2D, npt.NDArray[Any], npt.ArrayLike, Sequence[float]]
+    Vec2DLike = Vec2D | npt.NDArray[Any] | npt.ArrayLike | Sequence[float]
 else:
     Vec2DLike = Any
 
-Vec2DArrayLike = Union[
-    Vec2D, Sequence[Vec2DLike], npt.NDArray[Any], npt.ArrayLike, Sequence[Sequence[float]], Sequence[float]
-]
+Vec2DArrayLike = (
+    Vec2D | Sequence[Vec2DLike] | npt.NDArray[Any] | npt.ArrayLike | Sequence[Sequence[float]] | Sequence[float]
+)
 
 
 class Vec2DType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/datatypes/vec3d.py b/rerun_py/rerun_sdk/rerun/datatypes/vec3d.py
index 77f4d760af1e..42454b9cf69c 100644
--- a/rerun_py/rerun_sdk/rerun/datatypes/vec3d.py
+++ b/rerun_py/rerun_sdk/rerun/datatypes/vec3d.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, Union
+from typing import TYPE_CHECKING, Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -39,13 +39,13 @@ def __array__(self, dtype: npt.DTypeLike = None) -> npt.NDArray[Any]:
 
 
 if TYPE_CHECKING:
-    Vec3DLike = Union[Vec3D, npt.NDArray[Any], npt.ArrayLike, Sequence[float]]
+    Vec3DLike = Vec3D | npt.NDArray[Any] | npt.ArrayLike | Sequence[float]
 else:
     Vec3DLike = Any
 
-Vec3DArrayLike = Union[
-    Vec3D, Sequence[Vec3DLike], npt.NDArray[Any], npt.ArrayLike, Sequence[Sequence[float]], Sequence[float]
-]
+Vec3DArrayLike = (
+    Vec3D | Sequence[Vec3DLike] | npt.NDArray[Any] | npt.ArrayLike | Sequence[Sequence[float]] | Sequence[float]
+)
 
 
 class Vec3DType(BaseExtensionType):
diff --git a/rerun_py/rerun_sdk/rerun/datatypes/vec4d.py b/rerun_py/rerun_sdk/rerun/datatypes/vec4d.py
index d68b6dcd19a4..8f60085f23fa 100644
--- a/rerun_py/rerun_sdk/rerun/datatypes/vec4d.py
+++ b/rerun_py/rerun_sdk/rerun/datatypes/vec4d.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Sequence, Union
+from typing import TYPE_CHECKING, Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -39,13 +39,13 @@ def __array__(self, dtype: npt.DTypeLike = None) -> npt.NDArray[Any]:
 
 
 if TYPE_CHECKING:
-    Vec4DLike = Union[Vec4D, npt.NDArray[Any], npt.ArrayLike, Sequence[float]]
+    Vec4DLike = Vec4D | npt.NDArray[Any] | npt.ArrayLike | Sequence[float]
 else:
     Vec4DLike = Any
 
-Vec4DArrayLike = Union[
-    Vec4D, Sequence[Vec4DLike], npt.NDArray[Any], npt.ArrayLike, Sequence[Sequence[float]], Sequence[float]
-]
+Vec4DArrayLike = (
+    Vec4D | Sequence[Vec4DLike] | npt.NDArray[Any] | npt.ArrayLike | Sequence[Sequence[float]] | Sequence[float]
+)
 
 
 class Vec4DType(BaseExtensionType):
diff --git a/rerun_py/tests/test_types/components/affix_fuzzer10.py b/rerun_py/tests/test_types/components/affix_fuzzer10.py
index 657bfe836d7c..75e1fd88f566 100644
--- a/rerun_py/tests/test_types/components/affix_fuzzer10.py
+++ b/rerun_py/tests/test_types/components/affix_fuzzer10.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Sequence, Union
+from typing import Any, Sequence
 
 import pyarrow as pa
 from attrs import define, field
@@ -29,10 +29,7 @@ def __init__(self: Any, single_string_optional: str | None = None):
 
 
 AffixFuzzer10Like = AffixFuzzer10
-AffixFuzzer10ArrayLike = Union[
-    AffixFuzzer10,
-    Sequence[AffixFuzzer10Like],
-]
+AffixFuzzer10ArrayLike = AffixFuzzer10 | Sequence[AffixFuzzer10Like]
 
 
 class AffixFuzzer10Type(BaseExtensionType):
diff --git a/rerun_py/tests/test_types/components/affix_fuzzer11.py b/rerun_py/tests/test_types/components/affix_fuzzer11.py
index d3dd67ba7a74..c22258198aba 100644
--- a/rerun_py/tests/test_types/components/affix_fuzzer11.py
+++ b/rerun_py/tests/test_types/components/affix_fuzzer11.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Sequence, Union
+from typing import Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -35,10 +35,7 @@ def __array__(self, dtype: npt.DTypeLike = None) -> npt.NDArray[Any]:
 
 
 AffixFuzzer11Like = AffixFuzzer11
-AffixFuzzer11ArrayLike = Union[
-    AffixFuzzer11,
-    Sequence[AffixFuzzer11Like],
-]
+AffixFuzzer11ArrayLike = AffixFuzzer11 | Sequence[AffixFuzzer11Like]
 
 
 class AffixFuzzer11Type(BaseExtensionType):
diff --git a/rerun_py/tests/test_types/components/affix_fuzzer12.py b/rerun_py/tests/test_types/components/affix_fuzzer12.py
index 31776b9be5e8..94055aec3a9f 100644
--- a/rerun_py/tests/test_types/components/affix_fuzzer12.py
+++ b/rerun_py/tests/test_types/components/affix_fuzzer12.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Sequence, Union
+from typing import Any, Sequence
 
 import pyarrow as pa
 from attrs import define, field
@@ -26,10 +26,7 @@ def __init__(self: Any, many_strings_required: AffixFuzzer12Like):
 
 
 AffixFuzzer12Like = AffixFuzzer12
-AffixFuzzer12ArrayLike = Union[
-    AffixFuzzer12,
-    Sequence[AffixFuzzer12Like],
-]
+AffixFuzzer12ArrayLike = AffixFuzzer12 | Sequence[AffixFuzzer12Like]
 
 
 class AffixFuzzer12Type(BaseExtensionType):
diff --git a/rerun_py/tests/test_types/components/affix_fuzzer13.py b/rerun_py/tests/test_types/components/affix_fuzzer13.py
index 50a0aacc5a71..d4eff0806e27 100644
--- a/rerun_py/tests/test_types/components/affix_fuzzer13.py
+++ b/rerun_py/tests/test_types/components/affix_fuzzer13.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Sequence, Union
+from typing import Any, Sequence
 
 import pyarrow as pa
 from attrs import define, field
@@ -26,10 +26,7 @@ def __init__(self: Any, many_strings_optional: list[str] | None = None):
 
 
 AffixFuzzer13Like = AffixFuzzer13
-AffixFuzzer13ArrayLike = Union[
-    AffixFuzzer13,
-    Sequence[AffixFuzzer13Like],
-]
+AffixFuzzer13ArrayLike = AffixFuzzer13 | Sequence[AffixFuzzer13Like]
 
 
 class AffixFuzzer13Type(BaseExtensionType):
diff --git a/rerun_py/tests/test_types/components/affix_fuzzer16.py b/rerun_py/tests/test_types/components/affix_fuzzer16.py
index 4f7ca96ff7b5..4b67b0ed1d08 100644
--- a/rerun_py/tests/test_types/components/affix_fuzzer16.py
+++ b/rerun_py/tests/test_types/components/affix_fuzzer16.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Sequence, Union
+from typing import Any, Sequence
 
 import pyarrow as pa
 from attrs import define, field
@@ -28,10 +28,7 @@ def __init__(self: Any, many_required_unions: AffixFuzzer16Like):
 
 
 AffixFuzzer16Like = AffixFuzzer16
-AffixFuzzer16ArrayLike = Union[
-    AffixFuzzer16,
-    Sequence[AffixFuzzer16Like],
-]
+AffixFuzzer16ArrayLike = AffixFuzzer16 | Sequence[AffixFuzzer16Like]
 
 
 class AffixFuzzer16Type(BaseExtensionType):
diff --git a/rerun_py/tests/test_types/components/affix_fuzzer17.py b/rerun_py/tests/test_types/components/affix_fuzzer17.py
index d0a2b6b7920a..714391ca1299 100644
--- a/rerun_py/tests/test_types/components/affix_fuzzer17.py
+++ b/rerun_py/tests/test_types/components/affix_fuzzer17.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Sequence, Union
+from typing import Any, Sequence
 
 import pyarrow as pa
 from attrs import define, field
@@ -28,10 +28,7 @@ def __init__(self: Any, many_optional_unions: datatypes.AffixFuzzer3ArrayLike |
 
 
 AffixFuzzer17Like = AffixFuzzer17
-AffixFuzzer17ArrayLike = Union[
-    AffixFuzzer17,
-    Sequence[AffixFuzzer17Like],
-]
+AffixFuzzer17ArrayLike = AffixFuzzer17 | Sequence[AffixFuzzer17Like]
 
 
 class AffixFuzzer17Type(BaseExtensionType):
diff --git a/rerun_py/tests/test_types/components/affix_fuzzer18.py b/rerun_py/tests/test_types/components/affix_fuzzer18.py
index 7749a74623c1..44396b34d3b7 100644
--- a/rerun_py/tests/test_types/components/affix_fuzzer18.py
+++ b/rerun_py/tests/test_types/components/affix_fuzzer18.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Sequence, Union
+from typing import Any, Sequence
 
 import pyarrow as pa
 from attrs import define, field
@@ -28,10 +28,7 @@ def __init__(self: Any, many_optional_unions: datatypes.AffixFuzzer4ArrayLike |
 
 
 AffixFuzzer18Like = AffixFuzzer18
-AffixFuzzer18ArrayLike = Union[
-    AffixFuzzer18,
-    Sequence[AffixFuzzer18Like],
-]
+AffixFuzzer18ArrayLike = AffixFuzzer18 | Sequence[AffixFuzzer18Like]
 
 
 class AffixFuzzer18Type(BaseExtensionType):
diff --git a/rerun_py/tests/test_types/components/affix_fuzzer7.py b/rerun_py/tests/test_types/components/affix_fuzzer7.py
index f845d2c0c291..bf908d4921c1 100644
--- a/rerun_py/tests/test_types/components/affix_fuzzer7.py
+++ b/rerun_py/tests/test_types/components/affix_fuzzer7.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Sequence, Union
+from typing import Any, Sequence
 
 import pyarrow as pa
 from attrs import define, field
@@ -28,10 +28,7 @@ def __init__(self: Any, many_optional: datatypes.AffixFuzzer1ArrayLike | None =
 
 
 AffixFuzzer7Like = AffixFuzzer7
-AffixFuzzer7ArrayLike = Union[
-    AffixFuzzer7,
-    Sequence[AffixFuzzer7Like],
-]
+AffixFuzzer7ArrayLike = AffixFuzzer7 | Sequence[AffixFuzzer7Like]
 
 
 class AffixFuzzer7Type(BaseExtensionType):
diff --git a/rerun_py/tests/test_types/components/affix_fuzzer8.py b/rerun_py/tests/test_types/components/affix_fuzzer8.py
index 67cb7a95df56..5428c6183cd0 100644
--- a/rerun_py/tests/test_types/components/affix_fuzzer8.py
+++ b/rerun_py/tests/test_types/components/affix_fuzzer8.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Sequence, Union
+from typing import Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -35,10 +35,7 @@ def __array__(self, dtype: npt.DTypeLike = None) -> npt.NDArray[Any]:
 
 
 AffixFuzzer8Like = AffixFuzzer8
-AffixFuzzer8ArrayLike = Union[
-    AffixFuzzer8,
-    Sequence[AffixFuzzer8Like],
-]
+AffixFuzzer8ArrayLike = AffixFuzzer8 | Sequence[AffixFuzzer8Like]
 
 
 class AffixFuzzer8Type(BaseExtensionType):
diff --git a/rerun_py/tests/test_types/components/affix_fuzzer9.py b/rerun_py/tests/test_types/components/affix_fuzzer9.py
index abcdf0f9683e..67cce0bc373a 100644
--- a/rerun_py/tests/test_types/components/affix_fuzzer9.py
+++ b/rerun_py/tests/test_types/components/affix_fuzzer9.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Sequence, Union
+from typing import Any, Sequence
 
 import pyarrow as pa
 from attrs import define, field
@@ -29,10 +29,7 @@ def __str__(self) -> str:
 
 
 AffixFuzzer9Like = AffixFuzzer9
-AffixFuzzer9ArrayLike = Union[
-    AffixFuzzer9,
-    Sequence[AffixFuzzer9Like],
-]
+AffixFuzzer9ArrayLike = AffixFuzzer9 | Sequence[AffixFuzzer9Like]
 
 
 class AffixFuzzer9Type(BaseExtensionType):
diff --git a/rerun_py/tests/test_types/datatypes/affix_fuzzer1.py b/rerun_py/tests/test_types/datatypes/affix_fuzzer1.py
index 6dc70aff02b2..bb8eae15da10 100644
--- a/rerun_py/tests/test_types/datatypes/affix_fuzzer1.py
+++ b/rerun_py/tests/test_types/datatypes/affix_fuzzer1.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Sequence, Union
+from typing import Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -76,10 +76,7 @@ def __init__(
 
 
 AffixFuzzer1Like = AffixFuzzer1
-AffixFuzzer1ArrayLike = Union[
-    AffixFuzzer1,
-    Sequence[AffixFuzzer1Like],
-]
+AffixFuzzer1ArrayLike = AffixFuzzer1 | Sequence[AffixFuzzer1Like]
 
 
 class AffixFuzzer1Type(BaseExtensionType):
diff --git a/rerun_py/tests/test_types/datatypes/affix_fuzzer2.py b/rerun_py/tests/test_types/datatypes/affix_fuzzer2.py
index ee2aa56208c2..7746e48a8ba1 100644
--- a/rerun_py/tests/test_types/datatypes/affix_fuzzer2.py
+++ b/rerun_py/tests/test_types/datatypes/affix_fuzzer2.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Sequence, Union
+from typing import Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -35,10 +35,7 @@ def __array__(self, dtype: npt.DTypeLike = None) -> npt.NDArray[Any]:
 
 
 AffixFuzzer2Like = AffixFuzzer2
-AffixFuzzer2ArrayLike = Union[
-    AffixFuzzer2,
-    Sequence[AffixFuzzer2Like],
-]
+AffixFuzzer2ArrayLike = AffixFuzzer2 | Sequence[AffixFuzzer2Like]
 
 
 class AffixFuzzer2Type(BaseExtensionType):
diff --git a/rerun_py/tests/test_types/datatypes/affix_fuzzer20.py b/rerun_py/tests/test_types/datatypes/affix_fuzzer20.py
index 303bdc3a1565..7116f38674a9 100644
--- a/rerun_py/tests/test_types/datatypes/affix_fuzzer20.py
+++ b/rerun_py/tests/test_types/datatypes/affix_fuzzer20.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Sequence, Union
+from typing import Any, Sequence
 
 import pyarrow as pa
 from attrs import define, field
@@ -45,10 +45,7 @@ def __init__(self: Any, p: datatypes.PrimitiveComponentLike, s: datatypes.String
 
 
 AffixFuzzer20Like = AffixFuzzer20
-AffixFuzzer20ArrayLike = Union[
-    AffixFuzzer20,
-    Sequence[AffixFuzzer20Like],
-]
+AffixFuzzer20ArrayLike = AffixFuzzer20 | Sequence[AffixFuzzer20Like]
 
 
 class AffixFuzzer20Type(BaseExtensionType):
diff --git a/rerun_py/tests/test_types/datatypes/affix_fuzzer21.py b/rerun_py/tests/test_types/datatypes/affix_fuzzer21.py
index 7092e7d465da..5a152cc625bb 100644
--- a/rerun_py/tests/test_types/datatypes/affix_fuzzer21.py
+++ b/rerun_py/tests/test_types/datatypes/affix_fuzzer21.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Sequence, Union
+from typing import Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -32,10 +32,7 @@ def __init__(self: Any, single_half: float, many_halves: npt.ArrayLike):
 
 
 AffixFuzzer21Like = AffixFuzzer21
-AffixFuzzer21ArrayLike = Union[
-    AffixFuzzer21,
-    Sequence[AffixFuzzer21Like],
-]
+AffixFuzzer21ArrayLike = AffixFuzzer21 | Sequence[AffixFuzzer21Like]
 
 
 class AffixFuzzer21Type(BaseExtensionType):
diff --git a/rerun_py/tests/test_types/datatypes/affix_fuzzer3.py b/rerun_py/tests/test_types/datatypes/affix_fuzzer3.py
index fc098692a9d0..e45c9b5f11d9 100644
--- a/rerun_py/tests/test_types/datatypes/affix_fuzzer3.py
+++ b/rerun_py/tests/test_types/datatypes/affix_fuzzer3.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Literal, Sequence, Union
+from typing import TYPE_CHECKING, Any, Literal, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -37,19 +37,10 @@ class AffixFuzzer3:
 
 
 if TYPE_CHECKING:
-    AffixFuzzer3Like = Union[
-        AffixFuzzer3,
-        float,
-        list[datatypes.AffixFuzzer1],
-        npt.NDArray[np.float32],
-    ]
-    AffixFuzzer3ArrayLike = Union[
-        AffixFuzzer3,
-        float,
-        list[datatypes.AffixFuzzer1],
-        npt.NDArray[np.float32],
-        Sequence[AffixFuzzer3Like],
-    ]
+    AffixFuzzer3Like = AffixFuzzer3 | float | list[datatypes.AffixFuzzer1] | npt.NDArray[np.float32]
+    AffixFuzzer3ArrayLike = (
+        AffixFuzzer3 | float | list[datatypes.AffixFuzzer1] | npt.NDArray[np.float32] | Sequence[AffixFuzzer3Like]
+    )
 else:
     AffixFuzzer3Like = Any
     AffixFuzzer3ArrayLike = Any
diff --git a/rerun_py/tests/test_types/datatypes/affix_fuzzer4.py b/rerun_py/tests/test_types/datatypes/affix_fuzzer4.py
index dd1e58dc4166..a3ed9d97e10b 100644
--- a/rerun_py/tests/test_types/datatypes/affix_fuzzer4.py
+++ b/rerun_py/tests/test_types/datatypes/affix_fuzzer4.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Literal, Sequence, Union
+from typing import TYPE_CHECKING, Any, Literal, Sequence
 
 import pyarrow as pa
 from attrs import define, field
@@ -33,17 +33,10 @@ class AffixFuzzer4:
 
 
 if TYPE_CHECKING:
-    AffixFuzzer4Like = Union[
-        AffixFuzzer4,
-        datatypes.AffixFuzzer3,
-        list[datatypes.AffixFuzzer3],
-    ]
-    AffixFuzzer4ArrayLike = Union[
-        AffixFuzzer4,
-        datatypes.AffixFuzzer3,
-        list[datatypes.AffixFuzzer3],
-        Sequence[AffixFuzzer4Like],
-    ]
+    AffixFuzzer4Like = AffixFuzzer4 | datatypes.AffixFuzzer3 | list[datatypes.AffixFuzzer3]
+    AffixFuzzer4ArrayLike = (
+        AffixFuzzer4 | datatypes.AffixFuzzer3 | list[datatypes.AffixFuzzer3] | Sequence[AffixFuzzer4Like]
+    )
 else:
     AffixFuzzer4Like = Any
     AffixFuzzer4ArrayLike = Any
diff --git a/rerun_py/tests/test_types/datatypes/affix_fuzzer5.py b/rerun_py/tests/test_types/datatypes/affix_fuzzer5.py
index 8fe701bb4068..a2c3bc1169ce 100644
--- a/rerun_py/tests/test_types/datatypes/affix_fuzzer5.py
+++ b/rerun_py/tests/test_types/datatypes/affix_fuzzer5.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Sequence, Union
+from typing import Any, Sequence
 
 import pyarrow as pa
 from attrs import define, field
@@ -41,10 +41,7 @@ def __init__(self: Any, single_optional_union: datatypes.AffixFuzzer4Like | None
 
 
 AffixFuzzer5Like = AffixFuzzer5
-AffixFuzzer5ArrayLike = Union[
-    AffixFuzzer5,
-    Sequence[AffixFuzzer5Like],
-]
+AffixFuzzer5ArrayLike = AffixFuzzer5 | Sequence[AffixFuzzer5Like]
 
 
 class AffixFuzzer5Type(BaseExtensionType):
diff --git a/rerun_py/tests/test_types/datatypes/flattened_scalar.py b/rerun_py/tests/test_types/datatypes/flattened_scalar.py
index 224443b6e496..87cd5deaeace 100644
--- a/rerun_py/tests/test_types/datatypes/flattened_scalar.py
+++ b/rerun_py/tests/test_types/datatypes/flattened_scalar.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Sequence, Union
+from typing import Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -41,10 +41,7 @@ def __float__(self) -> float:
 
 
 FlattenedScalarLike = FlattenedScalar
-FlattenedScalarArrayLike = Union[
-    FlattenedScalar,
-    Sequence[FlattenedScalarLike],
-]
+FlattenedScalarArrayLike = FlattenedScalar | Sequence[FlattenedScalarLike]
 
 
 class FlattenedScalarType(BaseExtensionType):
diff --git a/rerun_py/tests/test_types/datatypes/primitive_component.py b/rerun_py/tests/test_types/datatypes/primitive_component.py
index d680cb9cfe94..ce4abd5dc918 100644
--- a/rerun_py/tests/test_types/datatypes/primitive_component.py
+++ b/rerun_py/tests/test_types/datatypes/primitive_component.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Sequence, Union
+from typing import Any, Sequence
 
 import numpy as np
 import numpy.typing as npt
@@ -41,10 +41,7 @@ def __int__(self) -> int:
 
 
 PrimitiveComponentLike = PrimitiveComponent
-PrimitiveComponentArrayLike = Union[
-    PrimitiveComponent,
-    Sequence[PrimitiveComponentLike],
-]
+PrimitiveComponentArrayLike = PrimitiveComponent | Sequence[PrimitiveComponentLike]
 
 
 class PrimitiveComponentType(BaseExtensionType):
diff --git a/rerun_py/tests/test_types/datatypes/string_component.py b/rerun_py/tests/test_types/datatypes/string_component.py
index fd267d7ab1c3..62b03552ff45 100644
--- a/rerun_py/tests/test_types/datatypes/string_component.py
+++ b/rerun_py/tests/test_types/datatypes/string_component.py
@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Sequence, Union
+from typing import Any, Sequence
 
 import pyarrow as pa
 from attrs import define, field
@@ -35,10 +35,7 @@ def __str__(self) -> str:
 
 
 StringComponentLike = StringComponent
-StringComponentArrayLike = Union[
-    StringComponent,
-    Sequence[StringComponentLike],
-]
+StringComponentArrayLike = StringComponent | Sequence[StringComponentLike]
 
 
 class StringComponentType(BaseExtensionType):