>>/27555/
Well, it is, that's why we can tell them from gentiles though DNA testing, and that's how we can tell ashkenazi aren't White (besides the obvious phenotypic differences) even if they trace 47% of their ancestry back to Europe  
https://www.livescience.com/40247-ashkenazi-jews-have-european-genes.html

In this graph you can see how closely related they are (if you consider this common ancestor to be the khazars or the original israelites that's irrelevant) even ashkenazi and libyan jews are still closer to each other than greeks and sardinias for example
https://i.ibb.co/vP9WwjS/are-jews-white-european-infographic.jpg