blend file, but can be exported from Blender for use in other DCC apps. The files, which are intended to give Blender artists a base from which to sculpt their own custom characters, include stylised and photorealistic male and female figures, plus a range of body parts.
One unexpected bonus from the release of Blender 3.6 earlier this week was the Human Base Meshes bundle: an accompanying set of 17 character meshes created by the Blender Studio.