I've been annoyed having to search through my lists to find the right one so it'll be easier to gather them all here.
Decades:
2020s | 2010s | 2000s || 1990s || 1980s || 1970s || 1960s || 1950s || 1940s || 1930s || 1920s
Base genres:
Action (Adventure, Survival) | Comedy (Black comedy) | Comedy-Dramas | Drama | Romance | Thriller (Mystery, Psychological)
Real world genres:
Christmas | History (Biopics) | Medieval | Sports | War | Western
Animation
Animated shorts | Anime | Disney | Dreamworks | Pixar | Stop motion
Crime
Assassins | Cop | Courtroom | Detective | Gangster | Heist
Horror:
Comedy horror | Demons | Ghosts | Mummies | Slasher |…
