Muse: As a verb, it means to "be absorbed in thought".
House of Yharn: The upper-class "royalty" of the Psilonic community. The House of Yharn is purely Psilonic Mystic, no other Psi-capables -- regardless of species -- are allowed to consort with a Yharnite. For some reason, they tend to be left alone by the CPS, and are only investigated when one of their own steps out of line or does something rash. They are very elitist, and look down on the other Enclaves. Their saving grace? They find traitors just as contemptible as any other Enclave, and will allow any branch of Mystic to join.
Enclave of Illumination: Psilons mainly dealing with light, healing and empathy, the Lightened Ones, or Illumination Enclave hold light in high regard and live in places with a lot of glass (to allow as much light to fill the area as possible). Their doors are open to all Psi-capables.
Tantric Enclave: The Tantrics are one of the most powerful Enclaves, but you wouldn't know it due to their obliviousness to the outside world. Their primary motivations are to realise the ultimate pleasure, and to seek universal understanding. Aside from joy through intimacy (both Psionic and not), they are huge fans of mindmelding. Following the ways of the Mystics of yore, they have created a Psionic network -- the Psiplace -- where their consciousnesses and abilities create one superego, allowing truly instant transmission of thoughts and emotions. Those near them might feel a sense of belonging, a pull towards the Psiplace, and will join in on the mindmelding. They have invented and refined techniques which stimulate the pleasure centres of the brain, and they are always seeking new avenues of pleasure.
Lost People: This Enclave is filled, primarily, with mediums, and have access to spiritual abilities in addition to their Psionic ones. Seemingly composed of Druidic aethetic, the Lost People are highly secretive and suspicious of non-members, but they are fiercely loyal to those who have joined their ranks.
Psellouts: The worst of the worst. These are your Psi-capable mercenaries, soldiers, Protectors and scientists who help the Corptocracy further its anti-Psi agenda. They are the ones responsible for the invention of the Psi-cancelling membrane and the training of all Anti-Psilon Task Force Protectors. They know they can never show their face in any Enclave -- even the Lightened Ones -- lest they leave with their brains leaking out of their ears. Possibly the worst thing you can be in Outropolis as even the Protectors themselves don't truly respect Psellouts.