#4 Adam Cole
Adam Cole used to be a regular on Being The Elite and his on-screen murder and real-life NXT signing were one of the biggest moments in the early days of the show. Cole seemed incredibly close with each of the AEW signees during these times and has worked a great number of matches with The Young Bucks in particular in the group known as the Superkliq.
While Cole has been excellent in NXT to this point and seems poised for a run at the main roster very soon, there can be very little doubt that he would excel in AEW due to his enormous talent and the ease with which he could slot into storylines given his prior involvement in BTE. As good as Adam Cole is, he seems to be a great fit in both companies, whereas the remaining names seem like they would be a better fit for AEW specifically.