#5 Ivelisse

Ivelisse tried her hand in both Impact and the WWE prior to gaining notoriety in promotions like Lucha Underground, Shine and Shimmer. Like Ryan, she was a part of 'Gut Check' during a brief stint in Impact, but once again, Impact chose the wrong person when they picked Lei'd Tapa over Ivelisse to get a contract.
And even before that, Ivelisse was a part of the Tough Enough season from 2011 but had some trouble with injuries. To put in perspective the success of that version of the show, only Ariane Andrew (Cameron) ever made it to the main roster. Ivelisse did spend time as Sofia Cortez in the early stages of NXT and latter stages of FCW, but left, as many did, due to issues with Bill DeMott.
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Would she even consider going back to WWE given her unhappiness back in the day? A lot of things have changed since then, but sometimes a bad taste sticks in your mouth forever. She's a great talent all around, is well-versed in lucha moves, submissions and strikes, so WWE would be crazy not to pursue her, whether for a full-time gig or the MYC 3.