honestly I thought the PMD models were remade (but of course largely based on the existing ones) kinda like a weird thing halfway of rumble and just the full modelsGTI/SMD and the higher poly RTDX models are likely based on the same CG sculpt used for Pokedex 3D Pro. Here is Swampert's (RTDX on Left, Pro on Right). Had to repose 3D Pro heavily, but it's eerily similar for mesh shape, outside of RTDX's better lower jaw, and bigger teeth for 3D
View attachment 734351
UVs are again different
The texturing style for actual char models is nearly identical to PokePark-3D Pro, the shit shader RTDX uses is its own problem. Shame cuz I do like the mesh tiles dungeons use
If I had to guess, these sculpts existed around after PBR in the middle of Gen 4, properly credited to Imagica Digitalscape Co., Ltd. for PokePark to debut them. Then Chunsoft used these for refs to make low poly retopos for GTI then Super, and again for RTDX, while Creatures had Imagica make new revisions for XY on models. The 3D Pro models would be reused for Smash 4 Trophies, halting the use of Stadium-Colo models in Smash Bros
but yeah this makes sense, im just dumb LOL