A list of AO3 authors I highly recommend if you want thengthy, quality fics (just some of my personal favourites, there is no order, the few who have twitter will be tagged).

@NohaVale
@copper_trees
@naturallydeca
@GlamourWeeb
CaboosexChurch
@bloomveined

@Esselle_hq
Corporal_Levi_cleans_my_house
Ajaxthegreat
New_Prussia
Chiakery
@shotaz
@Lykeans
@unoutan
Ominous_Rain
amaimai (the particular fic "Free falling" has been stopped but I still read it dispite the status because its still great!)
theslytherinpaladin
@pitviperofdoom

There are still SO MANY writers I adore, but trying to remember them all or even find their works (because I read some fics before I even made an account) is really hard!
If I find/remember the other writers I will add them to this thread!