The user that created the community is treated differently in that they cannot be removed by the other moderators. I belive that user is referred to as the owner in the code. I haven't looked into it yet, but I think there is a way to transfer ownership of the community. If not, then there should be.
As far as I know, that is really the only difference between the owner and the other community moderators.
]> I think Lemmy is supposed to have this, but I am not sure.
That was my experience as a community-founder on Lemm.ee -- that I 'owned' the community, and that it was necessary for me to transfer ownership for that to change. Also, IIRC the owner has a couple more permissions on Lemmy than the other mods.
@klu9@piefed.social,
I'd suggest you could test this out by creating another acct here, assign it mod status, then compare permissions.