After posting in this thread I realized that corruption in Conan Exiles isn’t the first iteration I’ve seen in the Hyborian setting. Its also present in the 2007 Conan the Roleplaying Game - 2nd Edition. Either Funcom was heavily inspired by that medium and its supplements, or its a very heavy coincidence. The primary book as well as Faith and Fervor, are great sources of information that while itself may not be canon, seems to provide some inspirations to what is canon within Conan Exiles itself.