I didnt model these but, i did change textures and make new varients like albedo. if you have issues tell me. Here are credits:
For ultimatrix and Omniverse the creator/modeler is:https://sketchfab.com/Ryu.Ichi
For Alien force: https://sketchfab.com/Popcorn_WorkShop
For classic: https://sketchfab.com/joshbraisher
Crediting me is optional because i only edited and added parents. i didnt model anything.(btw i know the classic looks glitched here but when you open it up in blender it wont be)