Jay Terrell
I've Got It
I think as long as you are at least moderately attractive you will do well, people click on people they find attractive but that can't be the whole basis of your channel good looks can get you through the door but good content keeps them interested. If you are ugly then you had better be hilarious or serve some sort of niche market. I love ugly people by the way. I have ugly friends.
I think it also depends on the category. Look at Vsauce and Vlogbrothers. Extremely interesting content...but they are not super models.