#7 Scorpio Sky

One of the better success stories in AEW, Scorpio Sky alongside Frankie Kazarian as part of SCU, became the first-ever AEW Tag Team Champions. He even had a short-lived feud with Chris Jericho which got him over better than anyone expected.
While his current AEW career has taken off, it wasn't an easy road to get there. He had spent time in TNA/Impact Wrestling as well as Ring of Honor (ROH) and even appeared in WWE as Harold in anger management segments alongside Kane and Daniel Bryan.
Sky said that things didn't work out in WWE simply because he had appeared in TNA a month earlier. At the time, there was a dispute between both companies over talent and contracts. To be precise, as Sky had appeared in TNA, they couldn't touch him despite him being in the Kane and Bryan skits and getting a WWE tryout.
But all things happen for a reason, and things did work out for the better as he is now a legit star in the company.