I know a couple!!! not Nearly enough but >:)

I Study Rainbows by Astwrid

He stopped himself mid sentence. Never had he had to say the words out loud. That he was pan. That he was asexual, which was a thing that was more frowned upon than being gay or lesbian or even bisexual. He was ashamed of himself for not saying it aloud. He had no problem with what he was. Never had any problem. But it was just actually saying it that made it more real, if that made sense. It made sense for Harry.

One Step Closer by agrinwithouthiscat

In which Louis is aromantic asexual and doesn't want to go to a wedding on his own, Harry charms the pants off of Louis' family, and they spend a weekend playing Perfect Couple.

or

The one fake relationship AU where they don't end up together.

A Cuppa Courage by juliusschmidt

Liam kicks Harry's shin, picking up another cup to fill. “He seems like he’d be a good catch, if you liked guys, I mean.”

I do like guys, Harry does not say, even though he’d like to shout it at the top of his lungs. I DO LIKE GUYS.

very me

harry who sees the stuff about him “just being nice” and starts fucking cackling because,, why aren’t they just being nice in the first place why is that supposed to indicate Sexuality somehow,

harry who makes So. Many. Puns. too many. louis is dying. it has been 298 days since the first time he ever made one and niall’s heart is cold and dead. please stop he is ruining the whole year

harry who If He Has to See someone saying “so you like cooking materials” one more time he is going to burn on the spot

listen ... i know you want hl being frustrated but all i can think about is

louis deliberately fucking with people and making up fake information and facts, varying from “bi people can never touch a unicycle OR a tricycle, or we Burn In The Pit” and when people say that’s not true he just gasps and asks How They Could Lie So Blatantly

harry who makes very intricately designed saucepans for keyrings and makes up jokes about how Every Single Pan Person must have these To Be Accepted into the Pansexual Crew

louis and zayn spending A Lot of time talking to people about how No! bi and pan are Not the same thing, and harry nodding along with Vigour (even though he knows an embarrassingly little amount about this, because he’s ace so he’s never looked into anything else properly)

all three of them spreading out on top of each other and complaining about how warm it is but snuggling even closer because they like it that way

ace louis who likes harry in a Sexual Way but the thought of being in a sexual position with him or engaging with him like that makes him a bit ill

aroflux louis who is constantly swinging between wtfromantic and demiromantic and LIKES it, likes that some days he really, really loves harry and other days it’s like anything else

transboy louis who wants to transition but doesn’t think of it as a priority -he’s a boy whether he’s got top surgery or not, thanks, liam!:)

pan louis who enjoys sex, and has it a lot, even though some people say that’s not what being pan is about (”it’s what it’s about for me right now, okay, fuck off! i’m attracted to people regardless of gender, it’s nothing more than that.”)

louis who changes his pronouns occasionally, flits between she/hers and he/him as well as it/its (”and that doesn’t mean you can call all trans people ‘it’, by the way, and if you do it without asking i’ll scream:)”

louis who doesn’t feel an Equal attraction to two or more genders, and is told that he’s “not bi” for it, who is worried about it a Lot because what if he’s just faking it, making it up for attention like they say?

louis who meets harry who, at only 16, is already so proud of himself and his sexuality, has a Name for it, who comes out within minutes because “it’s easier now than later, when i’ve formed a bond, innit.”

louis who is awed by this boy and feels ecstatic when harry praises him and reminds him he is valid and real without anyone else, that he is real All on his Own

(louis and harry who can’t help but laugh when people say they’re in a gay relationship, bc they are really, really not)