This is my type of thread. Here's an eclectic list just trawling through recent bookmarks.

Watch The Roots by lionpyh. No-Game AU, Feferi stages a coup. Arafef, Fefvris, Aravris, with background Arasol and past Vrisrezi as well. Has some of the most beautiful prose I've ever read in a HS fic. https://archiveofourown.org/works/610993

perdition catch my soul by Terezi_Discourse is a Vrisrezi TLT AU. Cav Terezi and her Necromancer Vriska undergo the Lyctorhood trials. https://archiveofourown.org/works/61952278

Still Feel by Laurasaurus. Instead of going ultimate, Dirk kills off alternate selves one by one. Dirkjake, really brutally sad. Watch those warnings. https://archiveofourown.org/works/21710536

THE LAST LONE AMERICAN NIGHT by WheelCoveredInEyes. Dirk and Roxy's first conversations and discovery of one another. Very cute, very sweet. Gen. https://archiveofourown.org/works/56920906

Neverland, Baby by artreactor. A series of Dirks and Jakes, multiverse style. Again, very sad, and Dirkjake. https://archiveofourown.org/works/54541573

the ennui of too little and too late by Psythe. In a post-canon world that is not the Epilogues, Rose takes a walk down memory lane. Rosemary. https://archiveofourown.org/works/55186282

one more night (your lover remains dead) by rosemarinae (and its ensuing sequels). Really good depiction and- honestly, a primer for June/Jasprose. https://archiveofourown.org/works/25594684

Song of the Pyre by tactfulgnostalgic is thee unfinished masterpiece of Homestuck fanfic to me. If tactfulgnostalgic ever updates it I'll fall to my knees in joy. No-Game AU, Terezi Pyrope is assigned to be Vriska Serket's defense attorney. https://archiveofourown.org/works/10875459

And finally, I'll plug my Homestuck Beyond Canon-compliant series, the lost children of one great continent, by yours truly. Vriska Serket, temporary guardian of the Omega kids. https://archiveofourown.org/series/4886107