Here is a list of famous rulers in history, including queens, kings, emperors, and other political leaders:
Julius Caesar - Roman General and Dictator
Alexander the Great - Macedonian King and Conqueror
Cleopatra - Pharaoh of Egypt
Queen Elizabeth I - Queen of England
King Henry VIII - King of England
Napoleon Bonaparte - French Emperor
Queen Victoria - Queen of England
Attila the Hun - Leader of the Huns
Genghis Khan - Mongol Emperor
Kublai Khan - Mongol Emperor
Emperor Qin Shi Huang - First Emperor of China
Emperor Augustus - First Roman Emperor
Charlemagne - King of the Franks
King Richard the Lionheart - King of England
King Arthur - Legendary King of Britain
William the Conqueror - King of England
Ivan the Terrible - Tsar of Russia
Peter the Great - Tsar of Russia
Catherine the Great - Empress of Russia
Louis XIV - King of France
Elizabeth II - Queen of England
Winston Churchill - British Prime Minister during WWII
Franklin D. Roosevelt - President of the United States during WWII
There are countless more famous rulers in history, but this is a good start!