If there is something 4th edition did right, at the time, it was adding to monsters' pages the degrees of lore characters receive based on their Knowledge results.
For whoever may not know what I'm talking about, a sketchy example using the Mummy: CR 5, Knowledge (Religion) DC 15.
Knowledge (Religion) 15: Mummies are undead formed by the dead bodies of ancient people, usually kings or priests, upon which certain burial rites were performed.
Knowledge (Religion) 20: Seeing a Mummy in too close proximity seems to drain all hope and courage from the living, leaving them frozen in terror. The putrescence of their corpses also spread a horrible disease through injuries.
Knowledge (Religion) 25: Being often covered in bandages or other wrappings, and due to the essiccated state of their bodies, Mummies are particularly susceptible to fire. At the same time, their bodies are hardened and are damaged only by powerful strikes, when using weapons against them, even magic ones.
So, with 15, you know it's an Undead, and you're aware it has the common Undead abilities and weaknesses.
With 20, you know what you knew at 15 plus that they have a Despair Aura.
With 25, you know even more.
Is there any supplement, web page or whatever that does it for Pathfinder? I know there's no official book, but maybe some 3rd party product?
I'm playing with a GM who just runs it loosely. DC is 10 + CR; you rolled much higher? Here's the link to the monster's page, you know everything. Which is very ugly, but after all he lacks a tool like the one I'm asking for here, and doesn't want to waste time on picking what characters get to know or not.
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Also, a question. the description of Knowledge skills gives these entries for DCs:
Identify a creature's planar origin: Knowledge (Planes), DC 20
Identify a monster's abilities and weaknesses: Knowledge (Varies), DC 10 + monster's CR
So, what if a planar creature's CR is less than 10, making its DC 19 or less for abilities and weaknesses?
Say I have an Efreeti: CR 8, Knowledge (Planes) DC 18. At first sight, how can character know it has certain abilities if they fail to recognize it has planar origins (and thus, its specific kind, because if they knew it was an Efreeti, of course they'd know it is planar)?
Does it mean the check to identify abilities and weaknesses can only be done if those abilities and weaknesses are actually interacted with? In that case, that should be applied to all creatures, and one may never come to know certain weaknesses. For example, how would you get the check to know that you need silver weapons to harm a Werewolf, if you don't hit it with silver first? Also, knowledges are supposed to be had beforehand, not as reactions, so that can't be.
Then how should one handle the planar creature matter?