The first three groups form a continuity and is not perfectly correlated with loyalty to Ukrainian state.
Plus hungarians and some tatars.
Caveat emptor: I'm not from Ukraine.
One fact which people forget: Ukraine decided to end support to minorities, as such there is no longer possible to study in native language. This type of nationalism should not be supported at all. Ukraine is no saint.
Source, official website of Ministry of Education of Ukraine. (in Ukrainian) https://nus.org.ua/news/mon-pidrahuvalo-skilky-shkil-navchay...
The person who described themselves as "Ukrainian-Ukrainian" is implying that their own assessment of the situation is likely to be more accurate since they are not just an expatriate.
Just FYI - like you, I grew up hearing it called "the Ukraine" (like "The Philippines" or "The Netherlands") but apparently that's changed and it's just "Ukraine" now.
