#3 EC 3
Ethan Carter III who was previously known as Derrick Bateman was part of the fourth season of the original NXT TV series. Unfortunately for Carter, his first stint with the WWE did not go as he would've thought. He found himself out of the company in early May 2013.
But that didn't stop him as he went on to reinvent himself on the independent circuits and eventually found his way to TNA as EC 3, the nephew of then TNA President Dixie Carter.
The amount of improvement he had in his in-ring performance and his character, would ultimately lead him back to the WWE. EC 3 returned to NXT in January 2018 at NXT TakeOver Philadelphia.
Recently, he was named as one of the six participants who would be participating in a ladder match to crown the first ever WWE North American Champion at NXT TakeOver New Orleans.
It will take some time until WWE promotes him to the main roster but when he goes there, he is guaranteed to become a world champion in the process.