One of two major ancestral groups of Jewish people whose ancestors lived in France and Central and Eastern Europe, including Germany, Poland, and Russia. The other group is called Sephardic Jews and includes those whose ancestors lived in Spain, Portugal, North Africa, and the Middle East. Most Jewish people living in the United States are of Ashkenazi descent.
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https://www.cancer.gov/publications/dictionaries/genetics-dictionary/def/ashkenazi-jews

Palestinian Jews or Jewish Palestinians were the Jewish inhabitants of the Palestine region (known in Hebrew as Eretz Yisrael, lit.?' Land of Israel') prior to the establishment of the State of Israel in 1948.

The common term used to refer to the Jewish communities of Ottoman Syria during the 19th century [1] and British Palestine prior to the 1948 establishment of the State of Israel [1] is Yishuv (lit.?'settlement'). A distinction is drawn between the "New Yishuv", which was largely composed of and descended from Jewish immigrants who arrived in the Levant during the First Aliyah (1881–1903), and the " Old Yishuv", which was the pre-existing Jewish community of Palestine prior to the consolidation of Zionism and the First Aliyah.

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The Lemba are a southern African Bantu-speaking population claiming Jewish ancestry. Allele frequencies at four different Y-specific polymorphic loci, as well as extended-haplotype frequencies that included data from several loci, were analyzed in an attempt to establish the genetic affinities and origins of the Lemba. The results suggest that > or = 50% of the Lemba Y chromosomes are Semitic in origin, approximately 40% are Negroid, and the ancestry of the remainder cannot be resolved. These Y-specific genetic findings are consistent with Lemba oral tradition, and analysis of the history of Jewish people and their association with Africa indicates that the historical facts are not incompatible with theories concerning the origin of the Lemba.

https://pubmed.ncbi.nlm.nih.gov/8900243/