No love for papa Brezhnev?
He was the leader of the U.S.S.R at the height of it’s power and he was a Ukrainian just like his predecessor if nothing else that makes him important.
EDIT: Also I have ask, arnt Cossacks a separate group from Ukrainians who just happened to settle on lands now part of modern Ukraine, because you get Russian Cossacks too that implies they are a separate transnational group.