Constant Removal of Horrorcore as A Genre  
 If youre looking for a source, check the references in the critical reception section stating that Tyler on Goblin in very similar to early Eminem, which is undoubtedly horrorcore. If you check something like 2Pacalypse Now, you will see that the genres listed in the infobox have no references, as they need none. The listener can easily denote what genre the album's music is.