White Croats were pointed to western Slavs because they also lived upto Prague in pre-Christian times. White Croats in Zakarpatie were always an eastern Slavic tribe.

People of Zakarpatie were part of ancient Rus. Later, they became part of Polish Kingdom, Polish-Lithuanian Commonwealth, Austro-Hungary, Czechoslovakia, USSR.

It does not matter. People of Zakarpatie speak an eastern Slavic language being ethnographically eastern Slavs. I am an eastern Slav – Belarusian by descent. I can tell you I can understand the language of Rusyns of Zakarpatie a lot more better than Slovak, Czech or Polish. Rusyns of Zakarpatie always spoke an eastern Slavic language. They are also Orthodox or Uniates (converts of Orthodox).