I want it to say owner or maybe something else
Ask your WR or staff. Before UCP wiki admins could change that, but after UCP those MediaWiki pages are protected from admin.
I'm not sure staff will acquiesce to "Owner", though.
Be aware that the founder of a wiki does not actually own it by any means, they are just automatically given admin and bureaucrat permissions.
I dont have any staff
Sure, for now, but if you promote another bureaucrat, you will be 100% equal. Or if someone wants to join, you are not allowed to block them, or protect all pages. You have an important position but not ownership.
Isn’t this what they are looking for? https://dev.fandom.com/wiki/ProfileTags
Ah, yes, actually that can work too.
What do you think?