Just my thoughts:
Kzinti Empire: Super Breeder Evil-Aligned
The Kzinti Empire is a proud, warrior race but they also have a high fertility rate not usually seen amongst warmongering species. While this also is seen in high death rates in battle, they are quick to replace their numbers. The Kzinti have strong military production and soldiering bonuses. They also maintain a strong morale due to a cultural "high" achieved from victory in battle.
A.P.
Military Production, Weapons, Soldiering, Courage, Morale
Tyranny of Evil; Super Annihilator Evil-Aligned
The Tyranny of Evil is a group of demonic beings that wish nothing more than to sow discord and chaos throughout the galaxy as they seek control. The Tyranny has a strong influence, and powerful weapons. They have a very weak diplomatic ability however as they see all species as being massively inferior to them.
A.P.
Military Production, Espionage, Hit Points, Weapons, Defense
Olympian Gods: Super Manipulator Neutral-Aligned
The Olympian Gods are powerful and usually benevolent group of beings, but they can be quite mischevious and dubious when they want to achieve certain goals. Their ability to "make things happen instaneously" gives them bonuses in creativity, luck, and repair, but they are lacking in population growth. They do have a high diplomatic ability.
A.P.
Diplomacy, Creativity, Luck, Repair, Hit Points, Planet Quality
Geckodons: Super Warrior?
I don't really know anything about the Geckos, so alas, I can't write anything here. Sorry Seth 
Galactic Diplomats: Super Diplomat Neutral-Aligned
The Galactic Diplomats are the calm researchers of the galaxy, and well-respected negotiators. While lacking in overall military strength, they make it up for it in their combined diplomatic and research power.
A.P.
Diplomacy, Research, Morale
Gerontocracy: Super Adapter Good-Aligned
The Gerontocracy is an empire that literally means "Rule by the Old". They are a wise, and cautious race, but very knowledgeable and full of wisdom gleaned over the years. They are remarkably well-balanced in their ability but do not have any edge in any one ability either. They do have the largest starting technology advantage due to years of experience.
A.P.
Balanced- Econ, Social Prod, Mil Prod, and Research
High Command Hegemony: Super Isolationist Good-Aligned
Once the most powerful empire the galaxy had ever known, the Hegemony retreated back into its own corner of space when its mighty Emperor went missing. Still, the Hegemons can muster a very powerful economy and social production ability when called to arms.
A.P.
Economics, Social Production
Confederation: Super Organizer Neutral-Aligned
The Confederation of Planets seeks peace with other races, and to explore the unknown mysteries of the universe. Their ability to promote this ideology of peace is their strongest ability- an ever-increasing influence of those around them. They also have strong trade and research abilities.
A.P.
Influence, Research, Trade, Economics