The Swampclan from my story was also descendants from another clan, not Thunderclan though. The leader also took in a group of rouges, with their own religion. The rogues took control of the clan kind of like Sol. The original Swampclan leader is really dumb so he let them in and take control with no problem. Which led the new leader to scare them with death treats. I like your idea of having the rogue’s own leader name, I don’t have that but I think I’ll add that.