Here are all the Sun Belt coaches who have gone on to bigger jobs in the last 15 years, in a rough approximate order from good to bad. Note that they are mostly pretty good:

1 Curt Cignetti James Madison, 2019-2023
Done an incredible job at Indiana

2 Willie Fritz Georgia Southern, 2014-2015
Eventually won big at Tulane, including a top 10 finish, and how has Houston up and running

3 Jon Sumrall Troy, 2022-2023
Two solid seasons at Tulane.

4 Gus Malzahn Arkansas State, 2012
Solid run at Auburn, finished ranked 5 times in 8 years including a #2. Mixed at UCF, but was overseeing a transition from G5 to P5.

5 Eli Drinkwitz Appalachian State, 2019
3 so-so years at Missouri and then started winning big

6 Hugh Freeze Arkansas State, 2011
Good run at Ole Miss aided by cheating, bad run at Auburn

7 Scott Satterfield Appalachian State, 2013-2018
Was OK at Louisville but has Cincinnati rolling this year.

8 Jamey Chadwell Coastal Carolina, 2017, 2019-2022
Not great in 2025, but still a solid 3-year run at Liberty so far

9 Blake Anderson Arkansas State, 2014-2020
3 solid years at Utah State and then got fired after some kind of Title IX violation, which does not appear to be his own misconduct

10 Bryan Harsin Arkansas State, 2013
Good run at Boise State, but flamed out hard at Auburn

11 Neal Brown Troy, 2015-2018
Eventually got fired at West Virginia, but wasn't really that bad: 25-28 in the conference and 1 top 25 finish.

12 Willie Taggart Western Kentucky, 2010-2012
Slow start at South Florida but eventually had a good season there, OK at Oregon, fired by Florida State and then Florida Atlantic

13 Billy Napier Louisiana, 2018-2021
Failed at Florida