There is a Fic Rec meme going around, which asks people to rec fics in twelve categories (Angst, AU, Canon Divergence, Crossover, Fixit, Fluff, Humor, Hurt/Comfort, Missing Scene, Post/Pre-Canon, Songfic, Whump).

I posted my rec list here, with fics from batman, Silmarillion, rivers of london, star trek enterprise, babylon 5, lilo and stitch, captain America, black panther, moon knight, big hero 6, and the martian fandoms.