I only dated those of Chinese decent (sometimes mixed with other Asian decent) before my wife, who is massively mixed Latina and other things, but looks Asian.
I don't know if it's so much of a cultural thing, since several of those cases were with women whose families had lived here for several generations and who were totally integrated into American culture, with no sign of the old culture in the family (nor did they speak the old tongue).
I think certain women tend to like certain kinds of guys, and this happens on an ethnic level as well, probably based on some kind of genetic basis. I've noticed that Chinese and Chinese decent women, Vietnamese, and Filipina tend to like me, as well as Latina and some black women. White women, not quite as much, unless they are bigger/plump/tall. Something about me being tall, blonde, turns them on, dunno what.
Controversial observation below --
I've noticed that in Black male/ White female couples, the women tend to be a bit on the masculine/high testosterone side -- big chins, taller, more aggressive, obviously showing signs of higher testosterone levels in their development. I don't know if maybe there are also other aspects of choice involved (maybe white men tend to shy away from women like this, so they go for who goes for them), but that's just my somewhat controversial observation.
Let's not be naive and say that racial politics don't play into interracial relationships -- for various reasons, certain ethnicities make good "trophies", as mates, and there is an overall tendency to prefer light skin over dark (though I'm so light, I actually prefer dark in many cases, like with Black women).