Well, if there are Ukrainian themes already, I'll try to propose smth like "Class Scheme - Ukrainian" or, if my list is too short, "Ukrainian Historical". There are renowned rulers of Kievan Rus', southern (Ukrainian) principalities of Kievan Rus', renowned rulers of Cossack Hetmanate, and renowned Ukrainian fortresses.
Grand Prince Oleg
Grand Prince Igor
Grand Princess Olga
Grand Prince Sviatoslav
Grand Prince Vladimir the Great
Grand Prince Yaroslav the Wise
Grand Prince Vsevolod
Grand Prince Vladimir Monomakh
Grand Prince Mstislav the Great
Kyiv
Chernigov
Pereyaslavl
Halych
Volhynia
Hetman Dmytro Vyshnevetsky
Hetman Petro Sahaidachny
Hetman Bohdan Khmelnytsky
Hetman Ivan Mazepa
Hetman Pylyp Orlyk
Hetman Pavlo Skoropadsky
Chyhyryn
Kamenets
Zbarazh
Khotyn
Akkerman
Medzhybizh
Svirzh
Olesko