Why do Europeans are called as Caucasians although most Northern Middle Easterns have more Caucasian DNA than almost all Europeans?

Distribution of Caucasian DNA:
Why do Europeans are called as Caucasians although most Northern Middle Easterns have more Caucasian DNA than almost all Europeans?

This link shows how much Caucasian DNA Europeans, Middle Easterns and North Africans have: https://www.eupedia.com/europe/autosomal_admixture_frequencies_by_country.shtml

It seems like Northern Middle Eastern such as Turks, Iranians, Syrians and Iraqis have much more Caucasian DNA than Europeans such as Germans, French, Brits, Spaniards.
Why do Europeans are called as Caucasians although most Northern Middle Easterns have more Caucasian DNA than almost all Europeans?
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