There are other Russian Jews besides for Lubavitche and Skvere, there’s Karlin-Stolin, non-Chassidish Russian Ashkenazi Jews, Sephardi Russian Jews, the Mountain Jews, Bulgarian Jews and Georgian Jews.
Current states and borders does not mean that Jews coming from the region where the states changed does not mean they aren’t anymore Russian or Hungarian or other groups of Jew and their descendents for Jews are influenced by the surrounding ethnic culture that was there for centuries and in some cases over a millenium, and these vultures still continues to exist (to some extent at least) despite decades under new rule. Some of these states changed control of government numerous times, again, and it’s the surrounding majority of the race of the people, the language, the food, the centuries of cultures that influenced the Jews as well as the minhugim they themselves adopted over during the centuries living in a particular region that makes them the Jews they are. Current politics does not change that.
Bobova and Sanze Chassidim are still (very much) Galicians despite that today it’s part of Poland and before that part of the Austrian-Hungarian Empire.
Munkaze are still Hungarian despite the town now being part of Ukraine.
Etc, etc.