I meant people of different ethnic heritages in Poland...such as would the Orthodox in Poland. Half of an old friend's family was from the historically Byelorussian area around the Bug river and she was adamant that they considered themselves Poles. I was disappointed. I suppose they were in the same position as Rusyns in Slovakia once, who preferred to identify as Slovaks rather than get shipped off to the much worse off Soviet Union.
BTW, lots of Poles in big cities are not that nationalistic, and fewer in them are even practicing Catholics.