The relevant puzzle answers are these:
ST EDWARD'S CHAIR
Each of these clues one of the nine orders of angels in the Christian angelic hierarchy. Sort the angelic orders in order from highest to lowest rank, and read the diagonal of the puzzle answers:
Collinchou : Seraphim (he played Seraph in the Matrix movies) pRoginoskes : Cherubim (from the novel A Wind in the Door) stEdwardschair : Thrones canAda : Dominions chasTity : Virtues absolUteauthority : Powers theodoRo : Principalities (in the Crimea, in the 14th century) stgabriEl : Archangels mikescioScia : Angels (he's the manager of the LA Angels of Anaheim)
The diagonal spells CREATURES, which is the metapuzzle answer.