Citizen Version:
Texture size - 512x512
LOD0 - 768
LOD1 -  192
LOD2 -  32

Human Male/Female Version:
Texture size - 512x512
LOD0 - 240
LOD1 -120
LOD2 - 40

Proof:

Substance Painter Texturing

Low poly (there is no high poly)

Video and photos were recorded on this map:

https://sbox.game/ducksworkshop/workshop_skin_viewer