Actual Ethos are Egalitarian, Xenophile and Pacifist for Gaians and Egalitarian, Materialist and Pacifist for Morganites. I should probably change Xenophile for Spiritualist, makes more sense in the new version with ascension. In SMAC, Gaians hates Morgan only when he runs Free Market and nothing prevents me to run Green Economy if the Gaians are doing well and I want to avoid conflict.
Anyway, here's an update:
The Earth Remnant ended up at war with the Angels and the U.N. in the late 20's and eventually the Gurite joined them. Trying to avoid being blocked the Hive decided to attack the Remnant and absorbed them. (Including Alpha Centauri) The Hive then ended up continuing the war against the Angels, U.N. and Gurite which ended in '48. Surprisingly the Hive was able to take one planet from the U.N.. It remains to see if the Hive can survive alone surround by enemies.
Around 2230, a war erupted between the Pirates and the Spartans. It took only two years to the Spartan to win and take all the Pirates planets. Soon after that, the Believer's and the small purple empire (A new spacefaring spiritualist race) declared war against the Cybernetic Conciousness. The Conciousness fought a bitter war and was on the losing side of it. They still retain two worlds and are improving relations with the Spartan.
Actually they are pretty neutral to each other and don't have any treaty between them.