Extending this to regions seems like it could be a useful next step here.

I’m from the U.K. and my partner is Australian. While almost all names I’ve encountered in Australia are known names in the U.K., some would be very out-there for a U.K. name. I’m sure the same is true the other way around.

Not to mention the fact that this seems to be using an American English set of names and there are some very different naming conventions in the U.S. My last name is a first name in the U.S., and popular first names there are again very out-there for the U.K. or Australia.

I’m sure the same must be true for Spanish or French speaking countries.