#1 Adam Cole
Adam Cole is money. Point blank. Adam Cole staked claim to the NXT championship when he debuted at TakeOver: Brooklyn III. Cole founded the Undisputed ERA with Bobby Fish and Kyle O'Reilly, and later recruited Roderick Strong. Cole is as talented as they come, as charismatic as they come, and just as good on the mic as he is in the ring.
At TakeOver: New Orleans, Cole competed twice in one night. First winning the six-man ladder match to become the inaugural NXT North American champion, then replacing an injured Fish as O'Reilly's partner in the finals of the Dusty Rhodes Tag Team classic\NXT Tag Team championship triple threat. It was here where Strong turned on his partner Pete Dunne, helping ERA win the trophy and the titles. Despite all of this, Cole has not peaked.
After losing the NXT North American championship to Ricochet, Cole has been left off of multiple TakeOvers. The leader of the Undisputed ERA has been less featured than his cohorts. While Cole is a heel, he receives babyface reactions as he and the ERA are simply too cool to boo.
Anytime Cole throws his fingers in the air the entire arena yells "Bay! Bay!" with him. Everything from his catchphrases, mannerisms, multitude of kicks, unmatched arrogance, to the way he points and yells "boom" in sync with his theme music, you can't help but want to see more of him. You see ten minutes of Adam Cole and you want the entire show to revolve around him.
Cole has accomplished a lot in his time in NXT but has not yet completed his mission statement of becoming NXT champion, overshadowed by the likes of Gargano and Ciampa's rivalry of the century, Aleister Black's mystique, and Ricochet's meteoric rise. When these men move on, NXT will descend into a new era, the Undisputed ERA.