#4 The Young Bucks
Put simply, there's nothing left for The Young Bucks to achieve on the independent scene. They've won nearly every set of tag team championships imaginable, along with being the only team ever to hold the PWG, Ring Of Honor and IWGP Junior Tag Team Titles concurrently (a feat they've achieved twice).
Their current role alongside Kenny Omega in The Elite has allowed them to show off even more of their personality and has arguably elevated their star even further.
Matt and Nick Jackson have long been known as one of the most exciting tag teams in the world for years now. They've constantly been linked with WWE, and it's almost a foregone conclusion that The Bucks will end up inside a WWE ring at some stage.
The only issue would be whether Vince would allow the brothers to stay true to the character that got them over in companies such as NJPW and ROH.
The Superkick Party will eventually come to WWE. Given their status as the biggest tag team outside of the company, it's only a matter of time before WWE come in with a contract offer that's too big to refuse.