The more I think about it, the more I believe that the flagship X-Men book post HOXPOX will be drawn by Giuseppe Camuncoli. Hear me out:
The (very good) Darth Vader series he did with Charles Soule ended in December (the book launched when White was editor of the Star Wars titles), the same month Extermination ended. Larraz went straight from Extermination to House of X and when Silva finished Disassembled, he went straight into Powers of X. Camuncoli also did a lot of covers in the X-office during 2018 and did the final batch of covers for Disassembled.
Camuncoli drew all twenty five issues of that Darth Vader series, a feat unheard of by modern comics standards. I think Hickman knew exactly who he wanted to work with and chose Larraz and Silva for the minis and Camuncoli for the main ongoing. Which worked out because after doing twenty five issues back-to-back, no breaks, you’re gonna need a vacation. He recently did some pages in Star Wars #108, but what now?
Him and *Ramos’ usual spots in the Spider-Man books have been taken by Ryan Ottley and Pat Gleason. He’s worked with White extensively. He can handle long runs with no breaks. He’s the perfect X-Men artist when you think about it. Calling it now, [Uncanny or other suitable adjective] X-Men #1 by Jonathan Hickman and Giuseppe Camuncoli will be out in October.
*NOTE: I mention Ramos because Marvel mentioned him having a secret project during the Gleason announcement. I doubt it’s Marvel Comics #1001 or the December event. Ramos on Wolverine maybe?