Order of Harmony
From Halopedia, the Halo wiki
The Order of Harmony joined the Banished at some point prior to May 2560. The Order of Harmony complimented the mercenary conglomerate with more human forces, an addition to the standard Banished humans who were already in the core Banished clans such as the Clan of the Long Shields.
The Order of Harmony are composed of human forces.