Complete list of the originals:
Exploration
Francisco Vázquez de Coronado - Makes all existing colonies (of all European powers) in the New World visible.
Henry Hudson - Doubles production of fur trappers.
Sieur de La Salle - Any colony with 3 or more people automatically gains a stockade.
Ferdinand Magellan - All ships gain one extra move point, plus travel from the Pacific to Europe is sped up.
Hernando de Soto - All land units gain 2 sight points, plus Scouts will no longer be lost on "Lost City Rumor" (goody box) squares.
Military
Hernán Cortés - Conquering native villages always results in treasure and all treasure trains are transported to Europe for free, although you must still pay the prevailing tax rate. (Treasure must be taken to Europe to be cashed in and normally you must use your own galleon, or pay the Crown a hefty percent.)
Francis Drake - Increases combat strength of privateer ships by 50%.
John Paul Jones - Receive a free Frigate unit.
Paul Revere - Non-soldiers will defend a colony under attack, if there are no soldiers but there are muskets in the colony stores.
George Washington - Non-veteran soldiers are promoted to veterans upon winning their first battle. Also, soldiers who are petty criminals are promoted to indentured servants, and indentured servants are promoted to free colonists.
Political
Benjamin Franklin - Colonial powers will no longer go to war with you simply because of the political situation in Europe. Negotiations with other colonial powers are more favorable, and peace is always an option. (Normally, when the European nations go to war, their colonies go to war as well. Franklin is not always desirable, since the king gives you some veteran soldiers at the start of a war.)
Thomas Jefferson - Increases liberty bell production by 50%.
Thomas Paine - Liberty bell production is increased by a percentage equal to the current sales tax rate of your European parent power.
Pocahontas - Reduces all tension between your colonies and native villages, and reduces the rate at which it grows.
Simón Bolívar - The percentage of independence-minded colonists in all of your colonies increases by 20.
Religious
Jean de Brebeuf - All missionaries from now on become Expert Missionaries.
William Brewster - Player can select from a short list of colonist types whenever new colonists appear on the docks in Europe, which will not include criminals or indentured servants.
Bartolomé de Las Casas - All natives (currently) working in colonies become regular colonists (This can lead to a decrease in effectiveness for agricultural tasks, but an increase in manufacturing or skilled labor.)
William Penn - Increases cross production by 50%.
Juan Ginés de Sepúlveda - Attacks on native villages are more likely to result in a "convert" joining your colonies.
Trade
Jakob Fugger - All European boycotts on your goods (the result of Boston Tea Party-like dumping of various products) are forgiven.
Peter Minuit - Native land is free to use. (Normally, natives demand one-time payment for use of their land.)
Adam Smith - Factory buildings can be built, which generate 50% more processed goods per unit of raw material (compared to non-factories), but actually use less raw material to do it.
Peter Stuyvesant - Custom House can be built, which automatically sends any amount of selected materials over 50 units straight to Europe, without need for manual shipping.
Jan de Witt - Allows you to trade with foreign colonies, and adds information to your colonial intelligence screen.
Also, I wouldn't rule out the colony leaders being in the Congress just yet. Each game can only have one out of the two and it's possible that the other (or even both) might still be part of the list of choices.