The Infinite Dark
The Devourer: god of natural disasters, plague, and undead; his iconography has been displayed several times within the Mouth of Doom.
The Fury: goddess of revenge, obsession, and madness
The Keeper: god of greed, deceit, and thievery
The Enchantress: goddess of dark magic, manipulation, and forbidden knowledge
The Reaver: god of murder, violence, and savagery
The Raven Queen: goddess of death, darkness, and night
The Traveler: god of chaos and change; his iconography has been displayed several times within the Mouth of Doom.
The Weavers: goddesses of fate and destiny
The First Ones: unknowable ancients from the beginning of time, gods of unending darkness and unfathomable depths
This is not an exhaustive list; these are the gods most often worshipped or with authority over the most prominent aspects of reality.