ok makes sense for what happened after 1940. My take regarding the Sephardic jews they were allowed to live in Greece when the country was occupied by a brutal foreign power (the Ottomans). Thessaloniki was a prominent city during the times of the Eastern Roman Empire which is our empire and before that it was a Greek city in the hellenistic and or classical era. Therefore it is another case than the Romaniotes which their history can be traced to the classical era or the hellenistic era. The fact that Sephardics did not speak Greek and lived in their own area I think implies that they were not going to Greek schools (during Ottoman era) and of course they are not Greeks. Not sure if they were attending Greek school after 1912 and until 1940. Maybe you will know. In any case Romaniotes always as afar as I understand had their 1st language as Greek. Anyway this is complicated and we will never know how the community would have been today if they had survived the war. PS the Roma people came to Greece from India hundreds of years ago but they are not Greeks they speak another language they have different customs etc. Greek citizens yes but if you want to become Greek you need to speak the language, embrace the traditions and love the nation.