Someone mentioned it earlier but I think the "desirability" of jobs is more about fan support and organizational commitment to football. Obviously more fans makes a job more desirable, which is literally all the last 10 years of realignment has been about. If you have lots of fans and eyeballs on your team you'll have a seat at the table no matter your on-field results.
Then in terms of organizational commitment, it used to be purely about investing in facilities. Now it's about investing in facilities and NIL. And really NIL is probably more important at this point.
The Arizona schools may be in a desirable location with population growth, but I'm not certain that they are fully committed on the second part yet so I question their overall desirability. If the reports out of Arizona are true that basically they turned down an offer to match Washington to keep Fisch, then that's troubling from a "commitment to football" standpoint.
By those standards, I think OSU, KSU, BYU and Utah stand above the rest of the BIg 12 as we speak, with maybe Iowa State and Texas Tech right below them. TCU I think is committed to football, but with a smaller fan base than those larger state schools; same goes for Baylor. Kansas has potential but they need to show that they can keep things going for more than a few years at a time or will be back to 10K fans in the stands.
And yeah Colorado seems like it's a tough place to win WITH Deion, so we'll have to see how their first few seasons play out in the Big 12 an then (more importantly) what happens when inevitably leaves.