Speaking for myself personally:
Snively - Knew nothing about him. Was in college when he got hired and didn't have an opinion or pay attention. He worked out well, Fenwick screwed the pooch from the admin side. Would still be there if the admin hadn't denied tuition assistance to youngest son.
Aregood - Still didn't really care at this point, it's on public record this was a 1 year deal from the start just google it Aregood wanted to return for the 2nd year but an AD with the same name as a cooler didn't want him to return due to certain parents and their concern that their son wouldn't "excel" in his system.
Haverkamp - Heard good things going in. He did well. Moved on for his wife's job, very reasonable. Very frustrated with administration and parental voices.
Moore - Lazy hire, was an assistant and coached multiple Fenwick teams. Never endorsed this hire and he was never put in a position to succeed We all know who made this hire.
Mueller - Heard good things but he was also a bit of a job hopper. Had one good year, one underachieving year. Brought plenty of talent into the program. This was universally praised as a great hire. Quickly soured on the loopholes he had to go through to do his job. Made it very clear in a preseason article how frustrated he was with the "culture" at Fenwick. Very clear he would have never left if not for the "problems" at Fenwick that he tried to change but couldn't. 4th coach in a row with the same complaints.
Cranford - The only listed hire I have had a true first hand positive opinion of. Great guy, great coach, will right the ship. The only hire on this list who previously coached at Fenwick for 7 years as a HC and 8 as an asistant. Also graduating from Fenwick. Objectively loyal to the program. His role at Fenwick in the Athletic and Admissions department along with alumni relations is perfect. All 3 departments directly or indirectly impact the football program. The savior is a coach that left his alma mater for what reasons? Yes ditched Fenwick for Loveland. Not Moeller, not Princeton, but Loveland. Inherited a great class, won a state championship. kudo's to him. A few years later was gone from that program. Well running a good program into the basement will do that to you. Applied to return to Fenwick but Haverkamp, Moore, and Mueller all hired instead. Why?
You had specific concerns about his loyalty - I've addressed that, I'll point to Rick Cassano's article if you have concerns about him being able to run a modern offense. On the defensive side he's got an 8 year NFL vet who's coached in HS, College, and the NFL. No more running 50 cover 3 every play. Can you address why this NFL vet did not even apply for the job. Wonder why he had no interest the job.