

Mormons are absolutely not Nicene Christians, but they profess to follow Jesus of Nazareth,
Is a bit like
Naturopaths are absolutely not germ-theory doctors, but they profess to practice wellness and healing,
as a way to shoehorn Brenda with the essential oils into the category of “doctor”. At the point where you’ve denied one of the few definitional traits of the category, you have to admit you don’t fit into it anymore, you can’t just pretend the definition doesn’t actually exist. It’s like being a lawyer who doesn’t deal with legal matters, but they have a bunch of ideas their college roommate came up with about how to run a country while he was high before dropping out of the first semester of law school.

Yeah, I dunno why this is the DoD’s job to hash out, I’m with you there. That part is the Christian Nationalism nasty bullying around.
I get you need chaplains, but IMO just use the official endonyms of each group without trying to categorize or subcategorize, and call it a day and let the chaplains match themselves up.
If I were a Catholic in the military and I got an LDS chaplain (or vice versa) for my religious rites, I’d be upset. So just treat all the little groups as their own little things if you must change something.