Some of the Duffer brothers' nods to Alien were subtle, like David O'Bannon, the cop who found Will's fake body. He was named after Dan O'Bannon, the screenwriter for Alien. The Demogorgon in Season 1 ...

Don’t expect a straightforward timeline, because continuity is a mess with the Alien and Predator timelines (even if, as in this list, you choose to ignore tie-in comics, novels, and games). Predator: ...