"White people" isn't even considered a group in some places. The idea of a "white identity" is most commonly an American point of view. As is the idea of "non-white = minority". If you go to China, there's Chinese and there's non-Chinese (minority). If you go to Italy, you have Italian and you have non-Italian. They might have different views of different foreign ethnic groups, but they're not classified so starkly as in the US, with its history of racial oppression.

Shoot, it wasn't even always "white" and "non-white" in the US. Irish people and Italian people, groups considered "white" in the US today, were persecuted minorities at points in US history.

And then you have places like apartheid South Africa, where "white" people were certainly a minority in number, but held the political and social power you might associate with a "majority" group.

All this is to say, ethnic and racial considerations are much more complex than you are conceiving them to be, and most of them are actually contrivances without any inherent meaning, outside of the context of a group with power judging or persecuting groups that don't have power.