So recently this year, games workshop has added the addition of custom chapters to Warhammer, and while building my army I realised that I was going with a space wolves kind of army. However while painting and lore building I was making the chapter a salamanders successor.
So what I was gonna ask is, how do custom chapter rules work regarding chapter specific units, could I say that they're a successor chapter to the salamanders and use some data sheets specific to the space wolves like thunderwolf cavalry and fenrisian wolves, while abandoning salamander specific data sheets.
Do I have to use salamander units specifically now that I've made them salamanders in paint scheme and lore.
Or can custom chapters just flat out not use chapter specific units. (I don't know too much on the custom chapter rules so I apologize if I'm being dumb)