DOUBLE TRAIT SYNERGIES
COLONIAL SETTLERS
VICTORIA (Imperialistic Financial): Build lots of cities quickly, and actually afford the maintainance costs. Gun it for Cottages, and stay close to the water (with Lighthouses near the Ocean).
AUGUSTUS (Creative Organized): Build lots of cities quickly, and actually afford the maintainance costs. Gun it for Cottages, and stay close to the water (with Lighthouses near the Ocean).
CATHERINE (Imperialistic Creative): Build lots of cities in the best locations, even at the higher difficulties. Settle a continent with speed and immunity. Take advantage of the Great Wall to hold off any interlopers, and be careful about your maintainance costs.
OFFENSIVE MILITARISTS
CHURCHILL (Charismatic Protective): With fewer units required for good defence at home, put lots of units on the offense. Use civics like Vassalage and Theocracy. Beeline for a military advantage, and remember that the Redcoat is a beast.
TOKUGAWA (Aggressive Protective): With fewer units required for good defence at home, put lots of units on the offense. Use civics like Vassalage and Theocracy. Keep focused on Melee and Gunpowder units.
CYRUS (Charismatic Imperialistic): Use the great generals generated by your Immortals in the ancient era to feed mega promotions to your Swordsmen in the classical era.
GENGHIS KHAN (Aggressive Imperialistic): Use the great generals generated by your Keshiks in the classical era to feed mega promotions to your Macemen in the medieval era.
JULIUS CAESAR (Imperialistic Organized): Start an early war, with fewer concerns about how you're gonna pay for those maintainance costs. Try to capture the Pyramids, use Police State, and remember that Praetorians are beasts.
NAPOLEON(Charismatic Organized): Use civics like Vassalage and Theocracy to promote your units, while Organized helps pay for the civics costs. The experienced units and fast Musketeers will let you conquer faster, and Organized will help pay for your huge empire. It never hurts to capture the Pyramids and use Police State.
DEFENDERS OF FAITH
SALADIN (Spiritual Protective): Biggest winner from "invincible" Longbows using the Oracle-Feudalism gambit... and pick up some religions along the way.
RAMESSES (Spiritual Industrious): More likely winner for "invincible" Longbows using the Oracle-Feudalism gambit... and pick up some religions along the way.
ASOKA (Spiritual Organized): Best equipped to take advantage of the Pyramids. Can get there early, grab lots of religions, and take advantage of cheap and fast civics swaps.
PERFECTIONIST BUILDERS
WANG KON (Protective Financial): Protective can potentially cut down your army size and thus your unit maintainance costs. Combine this with Financial for an Economic explosion. Gun it for Cottages, and stay close to the water (with Lighthouses near the Ocean).
PETER (Expansive Philosophical): Have the biggest cities with the most specialists. Make sure you grab the Parthenon and the Great Library, and add Hereditary Rule with lots of food.
GANDHI (Spiritual Philosophical): Will have the easiest time getting the Parthenon to support lots of specialists, with some religions along the way to collect lots of gold. Be sure to get the food to back it up, and make your way toward Literature and Philosophy/Pacifism
MEHMED (Organized Expansive): Support huge amounts of population. Get lots of food, Hereditary Rule, and the Pyramids to maximize the benefits of the cheap civics costs. The Hammam supports 2 additional population, without fail.
MANSA MUSA (Spiritual Financial): One of the few spiritual civs that doesn't start with Mysticism. But if you delay your expansion, you CAN found two religions in one city. In combination with the Financial bonus, you can have one hell of a money-generator (once you add the Mint, and Wall Street). Acquire other wonders like the Colossus to make the richest city in the world. And if you can use the Oracle-Civil Service gambit, you can switch to Bureaucracy and stack up huge coin by 1000 BC.