#3 - AJ Styles (WWE RAW)
For a long time, AJ Styles has been the safest option for WWE in any position. He can hang in the main event scene or even stroll around in the mid-card. Whatever he does, he will always deliver.
Styles is like a get out of jail free card for WWE because he can be used whenever the company has booked itself into a corner. He might be the safe bet this year too, with him announcing his entry into the Royal Rumble.
Styles has his eyes firmly set on the prize, and with the giant Omos by his side, things might be a bit different than they were before. In the last few weeks, Styles has been made to look strong by having him go over clean against Ricochet, Drek Gulak, and Elias, even though he's a cocky heel.
His matches have also gotten significant minutes and amazing spots, which could indicate that WWE wants to show us something.
Styles has also been lately making a note of mentioning in his promos backstage that he will be winning the Rumble, and from the looks of things, he might as well go on and win the whole thing. Plus, Styles will always a big enough name to sell a WWE Championship WrestleMania match.