#3 Kaitlyn
Kaitlyn competed in season three of NXT and on the main roster during the 2010-2013 period of time. During that time, she won the Divas Championship on the 20th anniversary of Monday Night Raw. She defeated the likes of Eve Torres and Tamina Snuka throughout her Championship reign until she was defeated by AJ Lee (AJ Lee began her historical Divas Championship reign at this time).
After being released from WWE, we did not see her again until she was announced for the 2018 Mae Young Classic. Kaitlyn defeated Kavita Devi in the first round before being defeated by Mia Yim in the second round. Kaitlyn's match with Mia Yim proved that she certainly still has it.
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Kaitlyn is only 32 years old so she can certainly have a future in WWE for the next few years. Kaitlyn should arguably go straight to the main roster where she can face the likes of Nia Jax, Ember Moon, Becky Lynch, Charlotte Flair, Asuka, and Sasha Banks.