If you're looking for manga similar to Zoids: Chaotic Century, you might like these titles.
A series of short stories that take place throughout the Universal Century Era.
Mobile Suit Gundam 00I 2314 occurs within the timeline of Mobile Suit Gundam 00 The Movie: A wakening of the Trailblazer.The manga features the revived Celestial Being shadow group known as Fereshte, and their encounters with the ELS.