DLC:
Three species require the Megacorp* DLC.
Two species require the Megacorp* DLC and the Federations DLC (one also requires Humanoid Species Pack).
Three species require the Utopia DLC (one also requires the Lithoid Species Pack and one requires the Plantoid species pack).
One species requires the Utopia DLC and the Apocalypse DLC
One species requires the Apocalypse DLC (and also requires the Humanoid Species Pack).
Two species require the Synthetic Dawn DLC
One species requires the Federations DLC (and also requires the Humanoid Species Pack).
One species requires the Humanoid Species Pack
One species requires the Plantoid Species Pack