#2 The Undisputed Era
If you look back at the past several years, one thing that has become incredibly obvious is the fact that WWE officials have truly signed some of the best talent in the entire industry. The signing of Adam Cole, Kyle O'Reilly, and Bobby Fish was just an example of how deep the collective corporate pockets are within the company and that they are willing to go after the best wrestlers on the planet.
There is also a decision that will have to be made as well, in regards to the future of this highly talented stable. That decision centers around Roderick Strong. Will the entire group remain together as they make the move to the main roster, or will Roddy be left behind? While Strong is a very solid performer, he certainly lacks that excitable "wow factor" that is needed for survival at the top. Roderick is definitely better with the group than without.
At the end of the day, The Undisputed Era is more than capable of not only surviving but in fact, thriving at the top of WWE's mountain. Personally, I believe all four will move to one of the main rosters together, but will eventually get dismantled at the next Superstar Shake-up. Regardless, there's a lot of money on the table for these guys.