Most Middle Eastern people resemble each other much more than, for example, they do Europeans. I defy you to tell an Iranian Jew apart from a Syrian Jew or from an Egyptian Jew or from a Bukharan Jew. In Fact, these communities of Mizrahi Jews are as free of inter-marriage as any Jewish communities in the world have ever been. So you are quite mistaken on that:the Jews who continued as Jews in ALL the muslim countries did so thru never marrying outside the faith. In fact, Syrian Jews to this day forbid inter-marriage and their Rabbis have issued an official edict banning conversion of Gentiles. We are a small people who have always been distinguished by our outsized contribution in every area of  Science, Business, the Arts and Learning. That is due to our shared DNA which is common to Jews from every corner of the world. We have no need or desire to incorporate Gentile characteristics into our gene pool. This is not racism but simple pride in distinct genetic heritage.