Watch Clone Wars then Rebels. The only thing with Clone wars, is that in the beginning, the story kinda jumps around a bit. You gotta look up how to watch it in chronological order so you're not confused.
Dylan Cave
2023-03-10 04:46:05 +0000 UTC
Star Wars: Clone Wars will eventually give you the back story of Mandalore and the Royal family. Star Wars: Rebels will eventually give you the additional backstory about Bo Katan, the Dark Saber, and what happened to Mandalore after The Empire took over.
I can give you specific seasons, but both those stories add SOOOOO much additional insight and information that it is worth watching both series in their entirety.