Yeah, sure I get ya. Non-jewish Soviet citizen would probably be the more precise way to describe what I mean, which is just people living in that geographic area. Though I suppose to the Nazi genocide machine, everyone east of Berlin was a Slavic judeobolshevik or some other such drivel.

I do think it's a bit reductive to say that Ashkenazi Jews throughout the European diaspora wouldn't have different subcultural characteristics that are related to the cultures they reside around. It's not like that's a monolithic ethnic group any more than another continent spanning group.