Some of my favorites are:
Most Helpful Guy
Mine would be HarshlyCritical. I have been watching him for several years now. He's a video gamer who posts playthroughs of indie horror games (or horror games in general).
After him my favorite would be the AmazingAtheist.1
Most Helpful Girl
I also love Markiplier and Jacksepticeye. But also ChoNunMigookSaram and ThreadBanger.1