Who are the main gods that rule over Gilgamesh's people in the novel, Gilgamesh: Man’s First Story?

The people over which Gilgamesh rules as king possess a vast pantheon of gods, but the main members are Anu, god of the skies, Ea god of the waters, Enlil, god of the earth, and his sister, Ishtar, goddess of love, the sun Shamash, Sin the moon, and Adad, voice of the thunder.