I've always had this odd personality disorder where I find it almost impossible to become irritated, so I really don't care how derpy or ADD-addled someone is as long as they're not straight-out murderbait like Fred or Annoying Orange. Mostly, I let my girlfriend pick the vids. The regulars around here are:
KSIOlajidebt
PewDiePie
Cry (Cryaotic)
Fine Brothers/Teens(/Elders/Kids/YouTubers) React
JacksFilms
Doug Walker/Nostalgia Critic
Nostalgia Chick
Ash Burch (Hey Ash Whatcha Playin?)
Two Best Friends Play/Matt & Pat's Shitstorm of Scariness
Jenna Marbles
In general, yes, a lot of online personalities are the kind of people you'd either find in a high school drama class or refilling a Ritalin prescription at an all-night pharmacy. It sort of goes hand-in-hand with putting yourself in front of a camera as a hobby. Most of them, though, whatever their flaws, are usually interesting enough to keep me from wanting to watch them spontaneously combust onscreen, and some are pretty good.
We follow a ton of YouTube musicians, too, but that would be too long a post to make, even for me. Erock, Pomplamoose, BrentalFloss, Lindsey Stirling, Pentatonix and Peter Hollens are the ones that update most often.