"Matthew
How many names (surnames and male/female given names) would you be looking for for each nation Jack?
NZ would be easy(ish), majority would be the same as Aus/UK names, but with a few added Maori names maybe.
But for others?
Maori names aren't actually common here at all. Most of them are pretty generic. First names like Matthew, Ryan, Ben, Sam, Tim, David, James, Kate, Katherine etc really are the most common, and most of the last names are very generic too - Lee, Smith, Grant, Vincent, Davidson etc
I've PM'd Jack any way. Happy to do the list for him if he wants me too.