Edge's new stable kicked off at WrestleMania with Damian Priest, as
FightfulSelect.com reported days ago. However, they're far from done adding to the group.
Fightful Select has heard that additional names have been pitched to join the stable, including that of former WWE Women's Champion Rhea Ripley. Aside from that, we've learned that there are NXT names that have been discussed, but haven't nailed down exactly who it would be.
This is far from confirmation that Ripley will join the stable, as it was simply a pitch. For example, the original Diamond Mine lineup was to be Roderick Strong, Tyler Rust, Marina Shafir, Arturo Ruas and Malcolm Bivens, and now consists of Strong, Bivens, The Creed Brothers and Ivy Nile.
Update: In an update since publishing this, we've learned that the NXT name pitched to join the stable is Tommaso Ciampa. Ciampa has been appearing on Raw and Smackdown of late, and seemed to have a bit of an NXT farewell at Stand & Deliver. Just last year, Ciampa told Fightful he had no plans of moving to the main roster full time, and might not have signed with WWE had that been the pitch to him.