Given the state of politics I can't see any of those extra-territorial states going to Poland. More so given how weak the explanation is given. Even with the "good historic relations" the Poles would have with the Hungarians there's nothing that'd appeal to their already habitual conservatism to allow themselves to be annexed by Hungary. And through the RP's active lore it's very safe to assume that Ukraine would have suffered a lot of harassment by pro-Russians to have more of it go to Russia. And Romanians; they both at the very least speak languages of two massively different languages from Poland.