Norse
Ymir
first giant, raw material of the world
Japanese (Shinto) tradition. See the whole pantheon.

She died giving birth to the fire kami Kagutsuchi. In Yomi she had eaten food of the dead; Izanagi saw her decaying and fled, and she pursued him with the furies of Yomi.
Deities in other traditions who share a theme with Izanami: creation and first beings, death and the underworld. This is overlap in one area only.