There's A LOT. I actually recommend you just go to a random page and scroll through, you’re bound to enjoy something. I also just enjoy fics in general so my tastes may not be that special

but just for the sake of actually answering:

All of Edoro's fics, I kid you not. the exact prose he uses when he talks about the incest between them is what I crave for in age gap ships no other ship can capture. favs include:

• Luz sneaking in on them fucking: https://archiveofourown.org/works/41785290
• Modern AU where uncle is a priest who tries pray the gay away from you but fails and grooms you instead: https://archiveofourown.org/works/34712344
• Belos catching Hunter masturbating countless times (THE BEST) https://archiveofourown.org/works/39603237

All of androgynous_snail’s fics. A lot of AUs and all of them are so interesting with lots of surprises you can’t stop when you start.

• The tonal shifting on this fic is so good https://archiveofourown.org/works/45480628
• When the creepy old man next door is actually your uncle https://archiveofourown.org/works/42754686

here_comes_a_supernova’s thread of fics. This one hits so hard because it haunts me like the kind of work that worms its way into your brain and settles there.

• All of it. I love part 3 the most https://archiveofourown.org/series/2495752

Almost forgot to say if you read any of these fics please consider leaving a comment for the authors other than kudos/bookmarking. They deserve all the love in the world

• Bile is a big fav. uncle's love language here really stuck in my brain. https://archiveofourown.org/works/46545553
• this fic is belunter mainly but so so so good!! one of my top favs because I rarely get to read empgold where hunter is an asshole yet so puppy https://archiveofourown.org/works/45322261/chapters/114026761
• Hunter’s entire rumination over having been sexually abused by his uncle fucks me up https://archiveofourown.org/works/44408266
• Erectile Dysfunction in the tags I think that’s enough to be convincing https://archiveofourown.org/works/44716209
• fucking fantasy Viagra https://archiveofourown.org/works/40486017

There’s just a ton of fics I like! I’m trying to list as many as I can

• Gutted by upset_tummysyndrome https://archiveofourown.org/works/55539298
• Get Out of My Sight by NecraFlora https://archiveofourown.org/works/53961607/chapters/136591816
• Appetizer (Anonymous) https://archiveofourown.org/works/49932880
• Caricature Carving by poni https://archiveofourown.org/works/41274024/chapters/103483812
• Low Life by Anmaii https://archiveofourown.org/works/41958729
• Jupiter's Water by rotsq https://archiveofourown.org/works/42015255
• Submit Unto Him (Anonymous) https://archiveofourown.org/works/40220535/chapters/100740312
• Failure to Perform (orphaned) https://archiveofourown.org/works/39574968

Thanks for the ask, anon! I actually have not been reading much fic lately but it was so fun going through the tag again. I really love so many of these :’) Empgold took me out of a dark place and so many of these fics were exactly what I needed. Like a defibrillator on my dead heart.