Hey, small update I did end up trying a 3D style with vertex colors (no textures needed).

Office plant, right is decimated (only somewhat)
(I have uploaded 2 other images as threads so far, banana+peel and a scene with cartoonish UFOs and a badger+mushroom... also my new avatar)

I tried it with Naylib but vertex colors don't render properly. It seems to me like there may have been a Raylib regression unless there's something wrong or something I need to add to my own code. And that's using OBJ.

Godot 3.X could work, but there doesn't seem to be a way of importing that gives everything a common material aside from manually assigning them to every instance (unless there's a trick, perhaps mesh library that works without a gridmap, that I'm missing). Though I suspect multiple materials (say if I wanted matte+metal+glass) in one object that might be more difficult to have happen on import. With Naylib I should be able to export models without a material at all, at the very least.

EDIT: Also if this doesn't interest you (though it seems like it's right in-line w/OpenGL) a small thing to add is that it's neat how Kbin shows the other threads w/the same title as a crosspost. I'm not sure if I noticed it before, but it really works here.