All these studies are old news but I am going to post them to paint a picture, starting with this one.
In Southern Europe during the Roman Empire, there was HIGH mixture between Jews and Gentiles, both Caucasian. This was not a rare thing, mind you Zionists and Neo-Nazis who both try to allege that Jews are a pure race.
That’s when the Jewish communities in Italy, the Balkans, and North Africa originated, from Jews who migrated or were expelled from Palestine and from people who converted to Judaism during Hellenic times. During that period Jews proselytized with an effectiveness that would put today’s Mormons to shame: at the height of the Roman Empire, as the Roman historian Josephus chronicled, mass conversions produced 6 million practicing Jews, or 10 percent of the population of the Roman Empire. The conversions brought in DNA that had not been part of the original gene pool in the land of Abraham.
Of the non-Jewish Europeans, northern Italians were most genetically similar to the Jews, followed by the Sardinians and French. The Druze, Bedouins, and Palestinians were closest to the Iranian, Iraqi, and Syrian Jews.”
The article as well indicates support for the idea of the Mediterranean race (link to Coon). Basically, the entire area around the Mediterranean sea is linked by physical traits and ancestry. Europeans of the North are depigmented Mediterraneans, but the Mediterranean race also existed in the Middle East and North Africa. So if we accept this theory (and the theory is correct, Coon was and is right), Jews were “white” before they ever mixed with Italians. Both Jews and Italians had Mediterranean pigmentation and Caucasian bone features.
That is evidence of “a shared genetic history of related Middle Eastern and non-Semitic Mediterranean ancestors who chose different religious and tribal affiliations.”
Then in Eastern Europe, Ashkenazi Jews continued to mix (this does not apply to Sephardic Jews, but Sephardic Jews did mix with Italians). Not as much, but they did continue to mix. See This link
Ashkenazim also descend, in a smaller way, from European peoples from the northern Mediterranean region and even less from Slavs and Khazars. The non-Israelite Y-DNA haplogroups include Q (typically Central Asian) and R1a1 (typically Eastern European but the Ashkenazic variant comes from somewhere in Asia, probably Central Asia).
Here is another interesting link : http://www.jogg.info/11/coffman.htm