The source isn't the most reliable however it is a factual on going development right now.
It includes Nintendo, TPC, Shogakugan, Shogakukan Productions, and Creatures Inc.
As of today however it is:
https:///game-freak-removes-creatures-inc-from-list-of-major-business-partners/
The list before Today:It includes Nintendo, TPC, Shogakugan, Shogakukan Productions, and Creatures Inc.
As of today however it is: