I've noticed that on the wiki and several online FAQs I checked, there are some differences in monster names and especially in how monsters are categorized. Part of the issue is the existence of multiple versions of Fate. I currently have the retail version that came bundled with Undiscovered Realms. I first played on a demo version that allow unlimited playtime but capped the Dungeon at 3 levels. I'm aware of at least two other versions: a new demo with different limitations, and a full version that is digital download.
In order to have the information on this wiki be as complete and well-organized as possible, we should take note of these differences. One proposal I have is the categorize the monsters based on the folders in the game files, which organizes them by model type. For example, Wyverns should have a separate category from Drakes/Dragons, and the Undead category should have sub-categories of Ghost, Skeleton, Mummy, etc. I don't have any information about whether this varies between versions of Fate, but assuming it does not, there is some work to do here.
Monsters which have different names or only appear in certain versions should have a section added to their pages to take not of version differences. Watcher/Abomination comes to mind. I'm not sure if the stats of various monsters differ between versions either.
I may update this post later with a list of monster types (folders) as they appear in the physical retail copy I own.