[Nick Beale]

Your question is really to broad to answer properly. About the only Luftwaffe units not operating against the Soviets in the final stages of the war were those based in Norway and Italy. Almost everything else they had either was or could be switched between operations on both fronts as the Reich's territory became ever smaller.

It's probably safe to say that almost every type of combat aircraft still in Luftwaffe service saw some action on the eastern front, from biplanes to jets.