3. Finn Balor

Finn Balor seems to be on the verge of a massive push. He defeated Drew McIntyre and Dolph Ziggler in a huge match that saw him gain considerable momentum. This is a sign of brighter things to come for the Demon King.
He is one of Raw's top babyfaces and is a strong candidate to face Brock Lesnar for the Universal title in the near future, probably at Wrestlemania.
Balor has been overlooked by the WWE management in recent years. But, with a paper-thin roster and with the departure of Roman Reigns, Raw needs a top babyface. Seth Rollins and Braun Strowman seem like good options, but Balor isn't a bad option either. WWE could finally have a suitable replacement for Roman Reigns if management capitalizes on Balor's popularity.
Balor's reemergence into the main event scene could start with a Royal Rumble win and an eventual Universal title match at Wrestlemania.