To me, it's Lamar Jackson and it's not even close.
Great, Jabril Peppers can play 5 different positions on the field at the same time?! Whoohoo. Good for him. He's versatile. Does that mean he should win the Heisman? And, other than Watson, none of the other candidates can even compete with Jackson. They just put them on there to make it some like it won't be exactly the kind of run-away that everyone has been talking about for months.
Then again, I couldn't give a crap about the Heisman. It's a private organization that - for the better part of the last two decades - has only given its award to what it deems to be the top QB or RB in the nation.