>>56424505CybertronVGC: His channel is almost all battles with usually interesting teams, he explains his mindset and choices well in a way that will help you improve. Honestly just an all around wholesome guy.
James Baek: Similar to Cybertron although the teams he uses are usually more creative and out there. Not as good as explaining his decisions but still a quality channel.
ScooteezyVGC: Small channel that gives good guides and overviews of the meta and how to combat it.
Clover Bells: Another really small channel. I wish he had more subscribers because he actually goes in depth on the teambuilding process, optimizing EV spreads, making sure to account for things like Life Orb, Leftovers etc. If you want to go from a beginner to more intermediate VGC player, I would start by watching his videos. He's probably my favorite Poketuber desu.