I'm actually not an avid YouTube watcher, so the only two YouTubers I really watch at all are Jenna Marbles and Shane Dawson. They're like the 'OG' YouTubers, in my opinion, and I've been watching them since around 2008 - 2010.
I really love how Shane is evolving into being such an amazing content creator and really expanding his audience. It's so cool seeing him grow.
I love Jenna's style of, "I'm just going to upload whatever crazy thing I want" because it always turns out hilarious.