So here's this kid growing up in rural South Dakota (it's all rural, there). He's exceptionally physically gifted, everyone can see that from early on. But he is kept humble by a face that looks like it spent the winter in the root basement with the potatoes. So the kid never becomes arrogant the way other gifted athletes sometimes do.
He has huge successes--like a national championship--tempered by setbacks, like having to change college not once but twice. Reinforces the humility, as well as the importance of family and friends and support structure, the people around you that you care about and who care about you. Faith and devotion and loyalty become his bulwark for withstanding occasional upheaval and disappointment.
Falls in love, gets married, has a family. Best thing in his life. Yeah, I know he's making millions coaching a sport, and for many guys that becomes the definition of their character, but for Josh it's family and faith, and THEN the game. This character aspect alone sets him apart from a lot of his peers in college and the pros. Makes him more even-keeled in hard times.
Late at night, when everyone else is asleep, if you get him to let loose a bit, he might tell you he sometimes feels like he's somehow pulling a fast one on folks. I mean, he does know the sport, and loves having been a quarterback. He loves being able to teach young men what he knows, and helping them improve. But the whole head coaching thing ... Josh in his most honest moments might admit he suffers a bit from Imposter Syndrome (look it up, it's a real thing) when it comes to that. Again, reinforces his humility and reference to powers greater than himself.
Put all that together, and you have a sincere, realistic, caring, motivated, quiet, humble, capable, talented, gifted, unsure, competitive, likeable head coach.
I don't think there's another one like him out there, anywhere. If you look for comparisons, you might keep coming up short.
We wish him the very best of luck, obviously.
Go Vols!