I’m not aware of another one. Some other distros like Ubuntu and OpenSUSE ship AppArmor instead, which does similar things but isn’t considered quite as secure.
I know plenty of other popular distros don’t ship any Mandatory Access Control system at all which seems like a very bad security practice to me. Same thing with Firewalls.
German Grammar Fun Fact 3: “Sie” is also “she” and “they” in addition to the formal “you”. Which also means that it can’t work like the gender neutral singular “they” in english.