Zardnaar
Legend
Taika Waititi has implied that his trilogy won't (I mean, it probably will tie in in SOME way, just so that it's still Star Wars, but I think the tie will be loose at best).
Yeah they can stray from the Skywalker's b I don't see Disney straying to far from the OT timeline in their movies.
Books and comics sure TV shows maybe. They're doing the high republic (300 years before the OT) but that's books and comics afaik with maybe one show in the works.
Also I don't see them straying to far from the following regardless of timeline.
Mandalorians
Jedi/Sith
Bounty hunters
Starfighters.
To be fair those are probably the most popular aspects of Star Wars.