Here we go, my first post here, my ideal choices for civs and their leader, from first 18 to every single DLC country after. I'll only include up to my top 3 leader choices for each country (if there's more than 3), even though I'd like to list more
1- America: Teddy Roosevelt, Washington, Lincoln
2- France: Napoleon, Louis XIV, de Gaulle
3- England: Churchill, Victoria, Elizabeth I
4- Colombia: Simon Bolivar
5- China: I'll admit, I don't know enough about Chinese leaders to really chose, so I'm just going to properly pick, I'll just put down the Kangxi Emperor from Qing
6- Japan: Meiji, Toyotomi Hideyoshi, Tokugawa Ieyasu
7- Khmer: Javavarman VII
8- Inca: Pachacuti
9- Aztecs: Montezuma I
10- Arabia: Saladin, Umar, Harun al-Rashid
11- India: Ashoka, Akbar I, Shah Jahan
12- Germany: Bismarck, Frederick Barbarossa, Otto I
13- Rome: Julius Caesar, Augustus Caesar, Trajan
14- Greece: Alexander, Pericles, Eleftherios Venizelos
15- Russia: Peter I, Catherine II, Alexander I of Russia
16- Persia: Darius, Khosrow I, Abbas I
17- Mongols: Genshis Khan
18- Egypt: Ramses II, Hatshephut
DLC:
Europe:
Bulgaria: Simeon the Great
Serbia/Yugoslavia: Stefan Dusan/ Josip Broz Tito
Norway: Harald Fairhair, Harald Hardrada, Haakon IV
Sweden: Gustavus Adolphus
Denmark: Cnut the Great, Margaret I, Frederick III
Spain: Isabella, Phillip II, Charles I
Portugal: John II, John I
Celts: I don't know enough about these guys, again, so I'll just place Boudica here.
Huns: Attila
Poland: Casimir III, Casimir I, Casimir IV
Hungary: Arpad, Louis the Great, Matthias Corvinus
Turks: Suleiman the Magnificent, Mehmed the Conquer, Kumal Ataturk
Netherlands: William the Silent, William III of Orange
Asia:
Korea: I don't know enough about them, so I'll just put Sejong here.
Burma: Bayinnaung
Siam: Don't know enough about them, so I'll just put Ramkhamhaeng here.
Indonesia: Gajah Mada
Uzbeks: Muhammad Shaybani, Timurlane
Phoenicians: Ithobaal, Pygmalion
Israel: David, Solomon
Sumer: Gilgamesh
Assyria: Ashurbanipal
Armenia: Tigranes the Great, Tiridates III
Africa:
Mali: Mansa Musa
Ethiopia: Haile Salasse. There's a lot more, but Ethiopian history is long and vast and I don't want to look through it again
Zulu: Shaka
Kongo: Afonso
Songhai: Askia the Great
Fulani: Usman dan Fodio
Zimbabwe: Changamire Dombo, Mwenemutapa Matope
Berbers: Dihya, Masinissa, Jugurtha
Americas:
Maya: Pacal
Iroquois: Hiawatha
Dakota: Little Crow, Sitting Bull, Crazy Horse
Cherokee: John Ross
Brazil: Pedro II
Argentina: Jose de San Martin, Julio Argentino Roca, Juan Peron
Oceania:
Polynesia: Kamehameha I