#3 Seth Rollins
The Architect aka The Kingslayer aka The Man -- Seth Rollins is, beyond the shadow of a doubt, one of the very best sports-entertainers walking the face of this planet right now. Rollins has captured every meaningful title you possibly can in the WWE, except the Universal Championship.
After all, who could forget his feud with Finn Balor over the coveted title? Well, The Architect is presently involved in a highly personal rivalry with his former Shield brother Dean Ambrose, and considering the fact that Rollins holds the Intercontinental Title, we can expect him and Ambrose to feud over it in the weeks to come -- their personal differences obviously being more significant than the IC title, in this case.
However, once Rollins is finished with the ongoing feud with Ambrose, the WWE could easily insert him into the Universal Title picture against Brock Lesnar. Nevertheless, it's extremely essential for us to understand here, that if Drew McIntyre or Braun Strowman do not beat Lesnar for the title at the Royal Rumble; we can expect The Beast to hold the title well into the month of February.
That said, the Elimination Chamber PPV (the date and venue for which are yet to be officially announced by the WWE) will likely take place in the month of February. And we can expect Rollins to take on Lesnar at the PPV.
Lesnar did not defend his title at last year's edition of the event, but with the company's top star Roman Reigns unlikely to return for the February 2019 PPV, the WWE will move heaven and earth to have The Beast show up at the Elimination Chamber event...