Nosler, Winchester, Remington, Hornady... they don’t make tons but there is a decent amount.
Sounds like a better situation than I expected.
I wouldn’t be too worried about feeding one if I had to rely on factory ammo, I’m sure there are companies that’ll custom load as well such as Unknown Munitions.
Never heard of them. Thought you might be joking but I googled them and they are for real!