Proposals of Khazar origins have been made regarding the Bukharan Jews, the Muslim Kumyks, Kazakhs, the Cossacks of the Don region, the Turkic-speaking Krymchaks and their Crimean neighbours the Karaites, to the Moldavian Csángós, the Mountain Jews, Subbotniks and others. The late 19th century saw the emergence of the theory that the core of today’s Ashkenazi Jews are descended from a hypothetical Khazarian Jewish diaspora which migrated westward from modern-day Russia and Ukraine into modern-day France and Germany. Linguistic and genetic studies have not supported the theory of a Khazar connection to Ashkenazi Jewry. The theory still finds occasional support, but most scholars view it with considerable skepticism. The theory is sometimes associated with antisemitism and anti-Zionism. —- Wikipedia with sources listed
Approximately 1/3 of Israel’s Jewish population is Ashkenazi (full or partial)—— “Ashkenazi Jews in Israel refers to immigrants and descendants of Ashkenazi Jews, who now reside within the state of Israel, in the modern sense also referring to Israeli Jewish adherents of the Ashkenazi Jewish tradition. They number 2.8 million (full or partial Ashkenazi Jewish descent)” Source—Hebrew University.