Ereshkigal- Sumerian myth: goddess of the dead and ruler of the underworld. She was the only one who could pass judgement and enact laws in her kingdom. Probably the inspiration for the Shadow Matriarch in Wretched and Divine.
Inanna, Queen of Heaven - Sumerian Great Goddess and forerunner of the Babylonian Ishtar. She is the first daughter of the moon, and the Star of Morning and Evening. Inanna is linked to the planet Venus and is a love Goddess.