 So, I learned this trick from Guilherme Olivera and it works so well, I just had to share it with you guys here. So shoutouts to him, thank you so much for the info. In Blender, instead of creating a texture map, you can also just straight up vertex paint different areas of the model into different colors. And instead of exporting as an OBJ, export it as an FBX, then once you're in substance, import the file as usual, under texture settings, bake the maps as usual, set your output size, dilation width to zero, and under ID, set it to vertex color. And now, when you want to drag in a material, just hold CTRL and drag the material onto the vertex color you want it to be applied to. You're done. Hope that helps and as always, I'll give a fantastic day and I'll see you around.