[quote=@The World]
<Snipped quote by TheWendil>

Alright, then I've got a couple of questions if that's okay. They're both theoretical to help me understand something about the Ranks. 
If there was a specific story of Gaia, would it only be a fable because not a lot of people know of that particular story, or would it be conflated with other stories involving a "mother earth" and therefor become legend or myth because nearly everyone knows at least one version of it? 
Similarly, Cain and Able. Would they be fable because not a ton of people know the story or would it get boosted by being part of the bible that tons of people know at least part of?
I basically am just wondering where the line between a specific story being its own grimoire and a story being just part of a larger story is at.
[/quote]

To answer the specific questions, first, most probable Myth and Legend (maybe even myth, depending on the angle).

Now, about the point where a single story is worthy of being a grimoire in itself or being part of a larger legend. It really depends on the story.

Taking Merlin as an example. Most characters in the Arthurian Mythos/Matter of Britain actually HAVE solo stories of their own, but they receive an appreciable boost in popularity by being associated with what's perhaps the most popular body of European fiction to be created after the Greek classics.

The same would apply for most other stories. It's a matter of discretion, mostly.