Cypriots, Aegean islanders, Pontics, Italiotes, Anatolians, mainlanders and even Levantine Rum are all Greeks. This needs to be driven home. And yes they all have their own clusters, they had their own cluster from the get go, when the ethnogenesis of Greeks began (Bronze Age Greeks of Greece and Bronze Age Greeks of Cyprus were distinct because they formed from different local elements-still, they were both Greek). Within the clusters themselves there is variance and even some people that are assimilated. Case in point the bilingual populations (Slavic-Greek) of Greek Macedonia-they are aware of what they are yet most of them refuse the minority status.
Taking all these into consideration, I doubt we will find one profile that encompasses all Roman era Greeks. They are an imperial population, I expect variance.