Yeah, that was a fun one! I've enjoyed 2 fictions that have to do with Gilgamesh, that I recall:
1) Brenda Clough's *How Like A God* couple of novels (modern DC couple runs into trouble from ancient times)
2) Modes of Thought in Anterran Literature audio drama (archaeology professor at "Harbridge" University is obsessed with Anterran culture most people think isn't real); several episodes touch on Gilgamesh https://www.modesofthoughtpodcast.com/