Part of being “white” is getting to decide who is “white.” This is only possible because “white” is a completely made up category. We shouldn’t even engage with the term.

It's entirely in the eye of the beholder, as white is an ephemeral western social in-group and not an ethnicity. If you think you see white people in this photo, then you do.

To that person, "there are at least 3 people who are clearly at leat white passing"

There is an excellent book titled "How the Irish Became White" by Noel Ignatiev. It's based on his doctoral dissertation and it provides a detailed historical look at just how arbitrary the concept of race really is.