#3 After - Johnny Gargano

Johnny Gargano started his WWE career three years ago with its NXT brand. He participated in the Dusty Rhodes Tag-Team Classic Tournament with his then-partner Tommaso Ciampa. Gargano is currently involved in a feud with Aleister Black.
Though the feud between the two was supposed to end at NXT TakeOver: WarGames II, last week on the NXT tapings, the two men came face to face and indicated the feud between the two is far from over.
R-Truth wanted to 'kill' former WWE writer. More details HERE
It's no secret to anyone that Gargano is ready to jump ship on the main roster, but not even a single word came out that WWE officials are thinking the same. I think the reason behind this could be that Gargano is already a top-guy and he can't leave the yellow brand without a title run, so maybe next year he will win the NXT Title.
So, perhaps he'll make his main roster debut following SummerSlam 2019.