Ofc Mohammed is the most common name but thats a name common within the muslim community. I have noticed the name Sarah in every country, regardless of race or religion. Or it might be an abrahamic religion thing but thats most of the world atleast.
I suspect other Abrahamic names might make the cut.
On the other hand, if your parents give you the middle name of Wayne, an FBI file is opened immediately.
I’m surprised you don’t see more FBI agents in Gotham. It’s a cesspool of crime, you’d think at least one person would at least be raided by a swat team.
Or maybe the place is so infested that the moment a team raids a guy, they get counter-ambushed on the way out.