I see what you are saying about the "awkward multiculturalism" but I actually rather like that aspect of it.
Maybe it's because I sort of got used to it, going to school with the children of immigrant parents who seemed fond of giving their children rare or dated English names. I was always curious about how that happened - how a parent with limited English would find the names
Bertha,
Agnes,
Eldon, or
Marvin and use them on their kids. Like where did they see those names? It's fascinating. So
Matilda with an Asian-sounding last name totally works for me and actually gives me some childhood nostalgia feelings. It's got a strong "smartest kid in the class" vibe because of that, too.