I'm planning on doing an epic Civilization saga in which I attempt to form a story of my civilization across Civilization V, Beyond Earth, and Starships. To do this, I have grouped all the Civ V civilizations to correspond to one of the sponsors in Beyond Earth, which will then correspond to a federation in Starships. For Civ V, I will play as a random civ against all random opponents on the huge Earth map with only the Science victory enabled to act as a lead-in to Beyond Earth. If I win, then I will move on to Beyond Earth and play as the sponsor that corresponds to my randomly selected civilization in Civ V and my opponents will also correspond to the randomly selected opponents in Civ V. Prior to playing Beyond Earth I will randomly select an affinity to follow, which will dictate what type of victory I go for and will determine which affinity I play as in Starships if I win my game of Beyond Earth.
Here are the civilization/sponsor associations I came up with according to what I have read about the background for the sponsors in Beyond Earth (for civs that don't have a direct correlation with a sponsor, I went with the one that made the most sense geographically):
Al Falah: Morocco, Assyria, Persia, Carthage, Arabia, Egypt, Ottomans
INTEGR: Germany, Austria
North Sea Alliance: Celts, England, Sweden, Netherlands
Chungsu: Japan (because Japan is not stated to be part of the Pan Asian Cooperative, and there is no Korean civ in Civ V)
American Reclamation Corporation: Iroquois, Aztecs, Maya, Shoshone, America
Pan Asian Cooperative: Mongolia, China
People's African Union: Songhai, Ethiopia, Zulus
Kavithan Protectorate: India
Brasilia: Brazil
Franco-Iberia: Rome, Venice, Spain, Portugal, France
Polystralia: Indonesia, Siam
Slavic Federation: Greece, Huns, Poland, Russia, Byzantium
Since Starships doesn't include the leaders from Rising Tide, I associated the sponsors from the expansion with the leader in Starships they would have been closest to culturally and is as follows:
Al Falah: Kavitha
INTEGR: Koslov
North Sea Alliance: Elodie
Chungsu: Sochua