On page 122 of the Mage Reference Book: The Awakening 2nd Edition Signs of Rorcery, there is a box showing the prelude bonuses for members of the Order of the Mages of the Small Ministers of the Witnesses of the Throne.
It contains the following information:
The raptor (sycorian) grants the crown of instinct. The character can ignore capitulations without spending Will, is immune to the penalties inflicted and inflicted by defeat, and increases his own doors in social maneuvering his hit points.
The prophet (Kyrian and Horologian) grants the crown of agency. When she or another character uses temporal sympathy on a spell with her as a subject, the character counts as having a strong temporal sympathy at all times of her or his own past. If a supernatural effect (including time spells) changes the story so that the character's past is changed, it does not change immediately, but only after its time succeeds, allowing it to do something .
The only other place in the book where these ministries are mentioned is in the description of the ten iron seals (the main exarchs that represent the Arcana), which each have a final sentence to the effect of "It is served by the X and Y Ministries ", without further description.
I have consulted Mage the Awakening Second Edition's corebook and Seers of the Throne's source book for Mage the Awakening First Edition, and I can find no mention of Sycorians, Kyrians or Horologians, and I do not not find anything on them on Google, either. Is this the first time that these small ministries are mentioned in a Mage book or in other collections of sources (first edition) or official news that I have not checked?