JRose11 is probably my favorite, because his videos are really informative and entertaining. His "Catch 'em All" vids are really helpful, and he has some good Top 10s.
I also really like Maxmoefoe because I'm a sucker for card opening vids. He's also definitely the funniest poketuber. The only funny one, really.
CandyEvie has some really comfy card openings and her bootleg vids are cool. She's definitely on the spectrum, though.
False Swipe Gaming is fun because you get to learn a lot about competitive history, even though you could just google that shit. I like having it spoonfed to me.
People like Marriland and Chugga are absolutely unwatchable to me, even though I think they have good content. I probably just have an inherent dislike of Let's Players, but those two are especially autistic and shrill. Marriland's voice sounds like what I might expect from a clown at my nephew's birthday party and Chugga is such a turbo sperg that I can't listen to him for two minutes despite his videos being really thorough and - in terms of being informative - really good.