Get all registered prim types to create by a nice plug-in grouping

usd_get_registered_prim_type_schemas.py

from pxr import Usd, Plug, Tf
from collections import defaultdict

NICE_NAMES = {
    "usdGeom": "Geometry",
    "usdLux": "Lighting",
    "mayaUsd_Schemas": "Maya Reference",
    "usdMedia": "Media",
    "usdRender": "Render",
    "usdRi": "RenderMan",
    "usdShade": "Shading",
    "usdSkel": "Skeleton",
    "usdUI": "UI",
    "usdVol": "Volumes",
    "usdProc": "Procedural",
    "usdPhysics": "Physics",
    "usdArnold": "Arnold",
    # Skip legacy AL schemas
    "AL_USDMayaSchemasTest": "",
    "AL_USDMayaSchemas": "",
}

plug_reg = Plug.Registry()
schema_reg = Usd.SchemaRegistry()

# Get schema types by plug-in group
types_by_group = defaultdict(list)
for t in plug_reg.GetAllDerivedTypes(Tf.Type.FindByName("UsdSchemaBase")):
    if not schema_reg.IsConcrete(t):
        continue
    
    plugin = plug_reg.GetPluginForType(t)
    if not plugin:
        continue
        
    plugin_name = plugin.name
    plugin_name = NICE_NAMES.get(plugin_name, plugin_name)
    
    # We don't list empty names. This allows hiding certain plugins too.
    if not plugin_name:
        continue
        
    type_name = schema_reg.GetConcreteSchemaTypeName(t)
    
    types_by_group[plugin_name].append(type_name)

# Sort and print
types_by_group = {key: sorted(value) for key, value in sorted(types_by_group.items())}
for group, types_names in types_by_group.items():
    for type_name in types_names:
        print(f"{group} > {type_name}")

Basically mimics behavior of this PR: Autodesk/maya-usd#1350

Example output of above snippet is:

Geometry > BasisCurves
Geometry > Camera
Geometry > Capsule
Geometry > Cone
Geometry > Cube
Geometry > Cylinder
Geometry > GeomSubset
Geometry > HermiteCurves
Geometry > Mesh
Geometry > NurbsCurves
Geometry > NurbsPatch
Geometry > Plane
Geometry > PointInstancer
Geometry > Points
Geometry > Scope
Geometry > Sphere
Geometry > Xform
Lighting > CylinderLight
Lighting > DiskLight
Lighting > DistantLight
Lighting > DomeLight
Lighting > GeometryLight
Lighting > LightFilter
Lighting > PluginLight
Lighting > PluginLightFilter
Lighting > PortalLight
Lighting > RectLight
Lighting > SphereLight
Maya Reference > ALMayaReference
Maya Reference > MayaReference
Media > SpatialAudio
Physics > PhysicsCollisionGroup
Physics > PhysicsDistanceJoint
Physics > PhysicsFixedJoint
Physics > PhysicsJoint
Physics > PhysicsPrismaticJoint
Physics > PhysicsRevoluteJoint
Physics > PhysicsScene
Physics > PhysicsSphericalJoint
Procedural > GenerativeProcedural
Render > RenderDenoisePass
Render > RenderPass
Render > RenderProduct
Render > RenderSettings
Render > RenderVar
Shading > Material
Shading > NodeGraph
Shading > Shader
Skeleton > BlendShape
Skeleton > PackedJointAnimation
Skeleton > SkelAnimation
Skeleton > SkelRoot
Skeleton > Skeleton
UI > Backdrop
Volumes > Field3DAsset
Volumes > OpenVDBAsset
Volumes > Volume