https://docs.godotengine.org/en/stable/tutorials/assets_pipeline/retargeting_3d_skeletons.html
Retargeting 3D Skeletons — Godot Engine (stable) documentation in English
To share animations among multiple Skeletons: Godot has Position/Rotation/Scale 3D tracks (which this document calls
retargeting 3d skeletonsgodot enginestabledocumentationenglish