If they did indeed pick those names while traveling to the US, possibly as adults, I think they’d actually really interesting cases. They’d be choosing names later than their peers, so they could see how the name game played out for their peers. Of course, they could also be peers of the parents of the other authors.
I’ve also met some folks who had English names that phonetically sounded similar to their original names. I wonder if there’s an east Asian first name that sounds like any of the versions of Katherine.
From my anecdotal experience origin is a big factor: of adults I have known to choose a name for themselves americans overwhelmingly pick unusual or ornamented names, whereas the other group (typically asian, first language has a different set of basic sounds) pick stereotypically common and plain/short names. I don't really know anyones specific thought process on the matter though, maybe I'll have to start asking for curiosities sake.
Anecdotal, of course, but the goal can be quite different for both groups.
English people choosing English baby names often want them to be relatively unique or stand out in some way. At the very least, they don't want them to be _overly_ common.
Manny people I've talked to that have chosen a name after immigrating are kind of aiming for the opposite. They want to fit in. They already feel that they stand out, and generally try and minimize that.
There's also the fact that for some groups, they're choosing the name at a time when they may not be very familiar with English names or culture, and may not have much in the way of local resources they can or feel comfortable with drawing on, so the main indication they have that they haven't chosen some absurd name is "hey, lots of people here are named that".
I’ve also met some folks who had English names that phonetically sounded similar to their original names. I wonder if there’s an east Asian first name that sounds like any of the versions of Katherine.