Territory

These are the "maps", "zones", "areas" - whatever you call them. They make up the environment you walk in, and have placements of several interesting objects such as static models, quest NPCs and so on.

Common LGBs

planevent

Known to have information about FATEs and other random stuff??

vfx

VFX, of course!

planmap

Not sure, honestly.

planner

Contains quest NPCs and whatever else needed - presumably - for content planning.

bg

All of the background objects/parts.

sound

Do I really have to explain what's in here?

planlive

Treasure hunt objects, crafting, gathering and more.