#5 AJ Styles
AJ Styles is regarded as one of the best in the ring over the last two decades, starring in TNA and NJPW, before becoming an even bigger star with WWE. Styles wrestled in WCW at the start of his career, signing a deal with the company in 2001. He was in a tag team called Air Raid alongside Air Paris.
But, with WCW going under a few months later, his WCW career came to a halt.
Tony Schiavone, who was the commentator for WCW, had the following to say: (H/T Still Real To Us)
"I remember AJ because he was a great performer and a great kid and because he was from Gainesville, Georgia. And [WCW] had performed a lot in Gainesville, Georgia so I knew him and talked to him and knew he was gonna be a star"
He did have tryouts with WWE and was offered a contract by them in 2002, but he rejected the deal. Styles then went on to wrestle for Ring of Honor, TNA, and NJPW, before signing with WWE in 2016.