Production topology humanoid scaffolds from Blender Studio. The verified card on the demo-files listing is Human Base Meshes v1.4.1 (Asset Bundles section, 49 MB, CC0). That listing mixes CC0 and CC-BY cards on one page; Ellie Pose Library on the same section is CC-BY and is a different entry. Export glTF/FBX for engines. Confirm the badge still says CC0 if the version number moves.
At a glance
Licence
CC0 (CC0-1.0)
Commercial use
commercial OK
Credit
Not required
Status
active: License spot-checked at the source; the entry carries dated evidence.