It's difficult to find somebody I enjoy, because I don't want to listen to somebody who is overly loud. At the same time, I don't want to listen to somebody who has no energy either. I do check out streamers with low view counts, but when investing time into somebody's stream I would rather not feel like I'm being put to sleep. On the lower view count side of Twitch there are many who just sound completely unenthusiastic.
I've watched and completed a couple series from Chugaaconroy, but most of the time I don't finish. His Gale of Darkness playthrough was entertaining, but then I tried to watch Chrono Trigger and stopped around episode 15. He is highly professional so that part of his playthroughs fascinate me, because every episode I learn a few things I didn't know previously. In my own opinion, I don't think his commentary is always enticing. It might be the loudness, but I can only watch so much at a time before I'm ready to take a break.
I liked watching "PokeaimMD" for a while, since he strikes a perfect balance. Even when my interest in competitive Pokemon faded, I still kept up with his channel for a while. ZeRo was my favorite player during his competitive Smash run, but I don't follow that scene anymore. It's fitting since he quit playing at tournaments and began streaming. I love his Smash Brother streams and I try to catch them when possible, but I still don't can't bring myself to watch when he's playing another game. He once asked his chat why he couldn't pull the same amount of viewers doing variety (It sounded rhetorical though). And honestly it's nothing to do with him. But if I'm going to watch a stream for several hours I would rather make sure it's a game I highly enjoy. He is a fantastic streamer though, and I'm sure his variety streams are just as great, but since there isn't time to watch them all I would rather choose the Smash Brothers streams.
Aside form them, there isn't anybody. My favorite channels are review channels, so most of the time I'm on YouTube I'm watching those.