That could be indeed a laborious list to make, that's why I think it would be interesting to know which personalities would you choose for it, what criterion should be used for the purpose... etc.
So in order to encourage you to start with it, I will take the list of
ArteHistoria's most important world's history figures
[edit: actually, they meant "protagonists" or "most outstanding personages", nevertheless thread's title will be kept], but excluding all the non-Europeans, which is as follows:
Alexander the Great (396 BC-323 BC)
Octavius Augustus (63 BC-14)
Charlemagne (742-814)
Louis IX of France (1215-1270)
Christopher Columbus (1451-1506)
Charles I of Spain (1500-1558)
Louis XIV of France (1638-1715)
Napoleon Bonaparte (1769-1821)
Victoria of the United Kingdom (1819-1901)
Adolf Hitler (1889-1945)
Mijail Gorbachov (1931-)
