Some truly extensive cliche lists
This is the advanced class in what-all has been done before:
The Grand List of Overused Science Fiction Cliches
Strange Horizons: Common Horror Plots
Strange Horizons: Common Spec-fic Plots
I especially am fond of this last link, as it’s very well-organized and there’s a playful, gentle-snarky tone to some of the plots they call out:
10. Someone calls technical support; wacky hijinx ensue.
a. Someone calls technical support for a magical item.
b. Someone calls technical support for a piece of advanced technology.
c. The title of the story is 1-800-SOMETHING-CUTE.
22. People whose politics are different from the author’s are shown to be stupid, insane, or evil, usually through satire, sarcasm, stereotyping, and wild exaggeration.
a. In the future, the US or the world is ruled by politically correct liberals, leading to awful things.
b. In the future, the US or the world is ruled by fascist conservatives, leading to awful things.