As I think you already identified:
This set comprises 332 plastic components, and is supplied with 1x Citadel 32mm Round Slotta Base, 7x Citadel 40mm Round Bases, 3x Citadel 32mm Round Bases, and 12x Citadel 25mm Round Bases.
I have the priest model (formerly 'Pious Vorne') and her base is 32mm with a slot in it. I also have the henchmen kit. A single kit contains one 32mm base (for the servitor) and six 24mm bases (for five dudes plus a tome skull). There are two such kits so you have double that. The chimera obviously doesn't have a base.
This accounts for everything except the seven 40
mm bases and a single 32mm base. The Culexus assassin kit on the
GW Webstore says that it comes with a 32mm base and the Grey Knight terminator squad says that it comes with five 40mm bases. This leaves two 40mm bases, which must be used for Coteaz and his eagle. All of this seems to match with the image for the Ordo Malleus set.
So I don't know for sure, but based on my deduction I don't see how it can be any other way. Both Coteaz and the eagle have 40mm bases