Yup i think Graphix got them all, although i think _DISP is an inverted height map, but mot sure.
GG is a metalic roughness workflow where the roughness is (for some unknown reason) named as _gloss.
If you go to the gg steam community page and look in the guides tab have a guide there that lists all the textures usef by gameguru and what theyre for (change the filter to most recent to find it easier)
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