#4 Adam Cole
For years the WWE Universe yearned to see the former ROH World Champion, and their wishes finally came true last year when Cole signed a developmental contract with WWE, making his debut on NXT by beating up Drew McIntyre.
Adam Cole competed on the independent scene for nearly a decade, winning numerous world titles in multiple organisations, and finally signing up with WWE in 2017, immediately aligning himself with Kyle O'Reilly and Bobby Fish.
Cole is considered by many to be one of the best performers of this generation, and became the inaugural NXT North American Champion at NXT Takeover: New Orleans earlier this year, in less than a year since his debut. Cole has become one of the best workers on NXT, and is expected to achieve big things in the company once he gets promoted to the main roster.