The big list of great old ones.

[Lord Kain]

The old ones are all demi-gods. The Outer gods may vary
The Great Old Ones are all demi-gods.

Atach-Nacha Domains: Spiders, Death, Law: Lawful Evil
Bokrug Domains Domains: Destruction,Water, Suffering: Neutral Evil
Chaugnar-Faugn Domains: Evil, Law, Madness, Strength Lawful Evil
Cthylla Domains: Evil, Law, Hunger Chaotic Evil

Cthugha Domains Fire, Sun, Chaos, Destruction, Choatic Evil

Cthulhu (dead) Domains: Evil, Death, Mentalism, Chaos, Chaotic Evil
Cyaegha. Domains: Chaos, Destruction, Suffering, War, Chaotic Evil

Father Dagon Domains: Water, Scalykind, Evil, Neutral Evil
Mother Hydra (same as above)

Elhort Domains: Bestial, Law, Strength, Lawful Evil

Ghatanothoa Domains: Earth, Evil, Fire, Madness , Neutral Evil

Glaaki Domains: Water, Undeath, Chaos, Trickery, Chaotic Evil

Ithaqua Domains: Air, Cold, Storms, Lawful Evil

Nyogtha Domains: Cold, Earth, Evil Magic, Chaotic Evil

Quachll Uttaus Domains: Undeath, Evil, Knowledge, Lawful Evil

Rhan-Tegoth Domains: Cold, Evil, Travel, Neutral Evil

Tsathoggua Domains: Destruction, Knowledge, Magic, Lawful Evil

Shudde M'ell Domains: Earth, Evil, Strength, Chaotic Neutral

Yig Domains: Scalykind, Death, Trickery, Lawful Evil

Y-golonac Domains: Chaos, Evil, Madness, Chaotic Evil

Ythogtha Domains: Death, Destruction, Evil, Maddness, Chaotic
Evil

Zhar Domains: Death, Earth, Evil, Neutral Evil