A miscellany of recs (and if anyone else has any to share, please please please do, because the sheer volume of fic for this show is ludicrous and without recommendations by people whose judgment I know and trust there's absolutely no way to sort through it all):
The Well-Tempered Clavier, by Magical_Destiny: Written by a fan who was a piano major in college, and who on a rewatch noticed that not only was there a clavichord in Stede's quarters, but it was one of the very few items Ed didn't fling overboard; noticing this led to questions about why, which led to this story.
Good As Mended, by EternalLiberty: A very short slice-of-life quiet time between Stede and Ed, set sometime between the 6th and 7th episodes.
Sincerely, Captain Thomas, by stitchy: An epistolary post-S1 piece that's so ridiculously charming that I had to stop to re-read it while I was in the middle of posting this.
Fond Regards, by ivyblossom: Another epistolary work, in which Stede gets almost unbearably smugly up his own arse and then collapses and then turns it all around, and it's quite lovely. We also get to find out what new names, cool ones, he would have come up with for himself and Ed if they'd rowed away to China.
stede bonnet's terrible, no good, very bad, very long day. by Skyuni123:The end of Act of Grace by way of Groundhog Day
make your peace with weariness and let it be, by anirondack: A gorgeous poetic meditation on Jim's interior life, which should have at least ten times more kudos than it currently has
AITA for doing my job and trying to keep the company afloat? by tikli: Izzy begins to worry that maybe it isn't everyone else that's wrong after all, and he turns to Reddit for feedback. Most of the comments on the story are also in character as various Redditors, to which the author responds in character, and if you've never encountered AITA it's probably deeply confusing but if you have it's ridiculously spot-on.