Thread:Dafreak29/@comment-33853553-20171203174528

Should be translated as Demonic, Demon, and Daemon respectively.

First one is the broad category of anything fiendish like Shuten and co., second are the Daemons and Gazers, third are the Heart-dropping Caster mobs specifically.

This is likely the translation NA will take, so I'd just like to point that out as a suggested standard for the wikia. 