these details are in the text and an info-graphic in the article itself.

that said, it's mostly 'safe' minorities, with few claiming to be Black or other 'hard to pass' minorities.

I assume you are referring to Asian Americans, but I can't even begin to imagine why.

https://asianamericanforeducation.org/en/issue/discriminatio...

They say they self-identify as a minority, often due to sociocultural reasons.

From the article, seems like Native American is common. That kind of makes sense for the USA, as a lot of us have heard of a great great grand daddy who was from some tribe or another, but the stories turn out to either be anecdotal (not verifiable) or so diluted that it feels wrong to claim the connection.

Elizabeth Warren got into a bit of trouble on this. It isn’t an uncommon problem, and I can see people admitting to lying here (even if they think there is a bit of truth to the claim).