Jews are a race hence why they're considered semitic (middle eastdern) instead of European due to the middle east being their origin land before they scattered all over Europe (mainly Eastern Europe), yes they've mixed with Europeans and yes there are different groups like sephardic and ashkenazi but regardless jews do share a common gene pool & historic origin not to mention a somewhat similar look regardless of their country of origin and technically speaking no race or group of people are of their purely original genes, everyones mixed, middle easterns (arabs, persians and jews)are a mix of African Semites and indo-aryan caucasians (proto nordics).