Quoted By:
Generations and Evolutions episodes are 5 minutes each, so you really can just binge them. Quality is a bit of whiplash, some of them just adapt events from the game and end as soon as they begin, the more interesting ones ironically tend to focus on minor characters. Some of them are comparatively more serious and dramatically framed compared to the weekly TV show, that's nice. Origins is four TV-length episodes, so also a quick watch, but four episodes just isn't quite enough for Kanto. Galar got Twilight Wings and Paldea Paldean Winds, which I haven't watched yet myself. Going back 20+ years Mewtwo Returns is neat if you liked the first movie enough to bother, and Mastermind of the Mirage Pokemon, existed.
