types:
Inca
a ruler of the Incas (or a member of his family)
basileus
a ruler of the eastern Roman Empire
Bourbon
a member of the European royal family that ruled France
ameer,
amir,
emeer,
emir
an independent ruler or chieftain (especially in Africa or Arabia)
ethnarch
the ruler of a province (as in the Roman Empire and Byzantine Empire) or certain religious rulers with secular authority
hakim
a Muslim ruler or governor or judge
Hanoverian
any of the British rulers who were members of the House of Hanover
khan
a title given to rulers or other important people in Asian countries
Moghul,
Mogul
a member of the Muslim dynasty that ruled India until 1857
oligarch
one of the rulers in an oligarchy
regent
someone who rules during the absence or incapacity or minority of the country's monarch
Stuart
a member of the royal family that ruled Scotland and England
grand Turk,
sultan
the ruler of a Muslim country (especially of the former Ottoman Empire)
Tudor
a member of the dynasty that ruled England
tyrant
in ancient Greece, a ruler who had seized power without legal right to it
Capetian
a member of the Capetian dynasty
Cheops,
Khufu
Egyptian Pharaoh of the 27th century BC who commissioned the Great Pyramid at Giza
czar,
tsar,
tzar
a male monarch or emperor (especially of Russia prior to 1917)
emperor
the male ruler of an empire
Huayna Capac
the Incan ruler under whom the Incan empire reached its widest extent (died in 1525)
shogun
a hereditary military dictator of Japan; the shoguns ruled Japan until the revolution of 1867-68
strongman
a powerful political figure who rules by the exercise of force or violence
caudillo
a military dictator in a Spanish-speaking country