I can "help" with providing a list of cadet branches, I think I had a not so complete list somewhere but no promises.
Anyway, here are two more cadets, newly branched:
- House Lannister of Darry, their CoA is quartered with Lannister and Darry CoA's.
- House Frey of Riverrun.
Because he's the king that Westeros deserves, but not the one it needs right now. So we'll fight him, because he can take it. He is a teeth gritting guardian. He is pure iron. A truly just man.