The historical index groups the same rulers by year and by polity.
867
- Jarl Hæsteinn of Montaigu · Easy
- Björn Ironside · Easy
- Ivar the Boneless · Easy
- Halfdan Whiteshirt · Easy
- Rurik · Easy
- Basileios of the Byzantine Empire
- Caliph al-Mu'tazz
- Charles the Bald · Medium
- Ludwig the German · Medium
- King Lothaire II · Medium
- King Louis II · Medium
- King Boris of Bulgaria · Medium
- King Rostislav of Great Moravia · Easy
- Prince-Archbishop Rimbert of Hamburg · Advanced
- Prince-Archbishop Adalwin of Salzburg · Medium
- Prince-Archbishop Lupus of Aquileia · Advanced
1066
- Petty King Murchad of Munster · Easy
- Duke Vratislav of Bohemia · Easy
- Duke Robert of Apulia · Medium
- Duchess Matilda of Tuscany · Medium
- Emir Yahya of Toledo · Medium
- King Malcolm of Scotland · Easy
- William the Bastard · Medium
- King Alfonso VI of León · Easy
- Emperor Konstantinos Doukas
- Alp Arslan
- Caliph al-Qa'im
- King Philippe of France
- Emperor Heinrich of the Holy Roman Empire
- King Harold of England · Advanced
- Harald Hardrade · Medium