Arch is staying at Texas and it sounds like Brock is all SEC, with Kentucky most likely. Gaby also just said that the staff preference is to take a veteran QB, which would rule out kids like Dante Moore.
I really like McCloud. He was exceptional this season after sitting out last year. Accurate and has some mobility as well. Size is a bit of a concern at 6'0.
Have to think OSU will be on his shortlist, if not a leader. DJU has been linked to FSU, but as you mentioned, they don't have as much to sell with guys leaving. From what is sounds like, OU is moving forward with Arnold.