>>214076230 (OP)
Ashkenazim were extremely insular their entire history and still look Levantine/Armenian/whatever. The Sephardim werenโt as insular and many of them converted.
>>214076230 (OP)
Run the PCA on nearest neighbors algorithm on 70/30 train/test and see yourself. NN might be the best for this dataset, depending on how much info does PC1 and 2 contain altogether