Post apocalyptic worlds that WEREN’T cause by zombies or zombie adjacent creatures

Basically anything with a pathogen that cause people to go insane and/or turn into monsters is out.

I Am Alive

The Fifth Wave

Carriers - Yes, it’s a pathogen but it doesn’t turn people who get infected into monsters, it’s just fast acting with a 100% mortality rate

Vanishing on 7th Street

A Quiet Place