#3 Finn Balor
Yes, I know he is a former Universal Champion, the very first one. However, it lasted a day before succumbing to injury, so it doesn't really count in my book.
Finn Balor is an amazing wrestler. He can do everything. The fans adore him for his character, eye-catching moves and an appearance that screams top star. They also love him for being an Indy darling and for his initial run as Prince Devitt in NJPW as the leader of the Bullet Club.
Imagine the scenes if Kenny Omega joined WWE and a triple threat for the Universal title at WrestleMania between Styles, Omega and Balor gets booked. A dream match between the three leaders of the Bullet Club at the grandest stage of them all. It doesn't get any better than that!
The bottom line is that the Demon King has to win the Universal title again.