Ask a German or British racist and see what their opinion is then

EDIT : My genuine belief is that there's no "race hierarchy" or anything like that, however...

People in general are treated differently based on race, with white people treated as if they're at the top of a heirarchy. Obviously , it's relative, for instance, a turk in poland and a turk in england are treated as "not white" , a pole in poland is treated as white, when compared to the turk in poland.

Somehow, the pole loses their "whiteness" when they migrate to the UK, and are treated with scorn and anti-immigrant rhetoric.

So, the desire for spaniards, and "paler" LatAm originating people to be treated as white is a fallacy that's trying to get them to be part of a privilaged group that may or may not get them in there, depending on the context they're in. A pale columbian is treated as white in LatAm, because they are whiter than Afro-Latinos. That same person will have a lot harder time being treated as white if they live in a border town in the USA.

Spaniards and other mediterranian europeans have the same thing happening to them. Oh sure, they're "White" in the mediterranian, but not so much if they go to places like germany or the UK.