Some time ago I had a pleasure of working on dwarf icons for CSW project. Just like in case of the original Reforged models, these icons are actually model screenshots with a bit of paintover to add additional degree of realism. While working on these, I think I learned a lot about textures.
Please check out the original models by Shadi Al-Abadi and the rest of CSW team: https://www.artstation.com/artwork/q9Klbz