PewDiePie, Cryaotic, Markiplier, Smosh, CinnamonToastKen, JackSepticEye Game Theorists, Dookieshed, and my absolute favorite, NateWantsToBattle (and of course I absolutely love Nate and Dookie's channel together)
I think Nate's my favorite because not only is he a gamer he is an amazing singer and makes great songs and parodies/covers.