#1 Adam Cole

There is nobody on the WWE roster that has had the kind of year that Adam Cole had in 2019. The NXT Champion led the Undisputed Era to the most dominant run that we'd ever seen from a faction on the Black and Gold brand. And considering the factions that were born in NXT, that's impressive.
Even the Wyatt Family was born on the former developmental brand, and they never had the kind of success that the Undisputed Era has had. While Harper and Rowan picked up the NXT Tag Team Titles, Bray Wyatt never captured a belt for himself. The Undisputed Era, though, ended 2019 with all four members of the group as champions.
Cole kickstarted 2019 with the all-important 'Undisputed Prophecy'. And though it had a rocky start, with the Era losing the NXT Tag Team Titles early on, by September, it had come to fruition. Cole had captured the NXT Championship from Johnny Gargano and put him in his rearview mirror with an epic 2-out-of-3 Falls match at NXT TakeOver: XXV.
Kyle O'Reilly and Bobby Fish managed to wrestle the NXT Tag Titles away from the Street Profits, while Roderick Strong managed to steal the North American Championship from the Velveteen Dream in September.
Cole continued to have a successful run, not just on NXT, but on RAW and SmackDown as well during the NXT Invasion. When the Black and Gold brand went to war, Triple H and Shawn Michaels made sure to bring their Ace along to get the job done.
The Undisputed Era ruined many nights for the Red and the Blue brand heading into Survivor Series. The craziest part about that run, however, was the win over SmackDown's own Daniel Bryan.
The Planet's Champion was one of the few SmackDown superstars at the show. Following Crown Jewel, the majority of WWE's staff, crew, and roster were stuck in Saudi Arabia. NXT took this opportunity to run roughshod over the Blue brand leading to an incredible match between Cole and Bryan.
Putting away Daniel Bryan, arguably the most popular wrestler the WWE's had since CM Punk, was a huge moment for Cole. As we head into 2020, the Undisputed Era still hold all the gold. And leading them into the future is the Panama City Playboy. After all, who wouldn't follow Adam Cole, Bay-Bay?