I'm going with UCF. They have done more with less than just about any program in America over the last decade. They will soon have financial parity with a number of schools that they had already surpassed on the field despite their sizable resource disadvantage.
The State of Florida has such an obscene amount of FBS Level Football Players that UCF can build a legit P5 Roster through both HS Recruiting and Portal Activity. They will be in a great position to pick up a bunch of kids who leave the state and then want to transfer home. Who knows maybe they'll pluck a few recruits from Texas and The Midwest?
As for the rest, I see both Cincy and UH settling in nicely in The Big 12, however I'm not high on either of their current coaches. I think BYU will struggle when they are suddenly not "special" They've shown that they can compete with most P5 Schools, however we've not had to see them play out an entire season's schedule worth of them. I think OU will ultimately be fine after adjusting to the level of competition in The SEC. They always have good players, coaches, and great recruiting. USC should also be fine, due to offensive coaching and access to talent, but I think they'll be surprised by the physicality of the B1G on a weekly basis. Utah beat the living hell out of them twice last year. There are a number of schools that will play that exact same way who will be on their schedule.
Finally, I think UCLA and UT are in real trouble. Despite location and access to talent, they are in for a rude awakening. UCLA is butter soft and will have their a** repeatedly handed to them by The Iowas and Minnesotas that want to play bully ball. Texas on the otherhand views themselves as the king of whatever conference they are in. This will be put to bed immediately when they roll into Tuscaloosa, or Death Valley for a night game. A little humbling is good for everyone, I'm not sure that their players or boosters are ready for what they are about to receive.