K/S:

• https://archiveofourown.org/works/18374039 (A Crazy Little Thing Called Love, 15k, this is very very good and you should read it it's them getting together but told through a bunch of different episode tags)
• https://archiveofourown.org/works/11763576 (From the Heart by Jenna from First Time #47, 5.5k, set post-TMP during the second five year mission, good and exactly what you'd expect because it's from First Time)
• https://archiveofourown.org/works/19663615 (In Check, 15k, most Kudos'd fic from Side By Side, another Jim talking a computer to death but instead he's talking Spock into fucking him fic, very good)
• https://archiveofourown.org/works/11576313 (Freely Given by Jenna, 22k, away mission on a planet where people do like obligatory social ritual kissing, very good very Jenna)
• https://archiveofourown.org/works/11618910 (Dawn by Jenna Sinclair, 6,5k, this is just a post-Voyage Home Spock getting his memories back fic, it is good and Jennapilled)
• https://archiveofourown.org/works/11754498 (Deep Water by Jenna, 25k, I can't say anything about this without spoiling it but it's good)
• https://archiveofourown.org/works/390875 (Brief Encounter by Amanda Warrington, 14k, they fuck while they're both undercover before they meet on the Enterprise)
• https://archiveofourown.org/works/43132155 (apogee/perigee, 12.5k, another one where they meet and fuck before they meet on the Enterprise, I love this author but she mostly writes AOS so idk if you've read her before, this fic is TOS though)
• https://archiveofourown.org/works/577240 (The King's Page by Amanda Warrington, 16.5k, royalty AU where Jim is Spock's servant, good!!)
• https://archiveofourown.org/works/13259316 (Between Now and Eternity, 125k, this is just the Sarek/Amanda fic you still need to read)
• https://archiveofourown.org/works/43945867 (The Road Not Taken, 17k, from First Time #58, this is a Tholian Web fic that's like what would've happened if Jim died and Spock fixing it, it's really good it's kind of a whole thing, it's by the same author as the Mirrorverse temporary blindness fic)
• https://archiveofourown.org/works/44559925 (logic and loftiness, 29k, regency era Pride and Prejudice inspired AU, v good)
• https://archiveofourown.org/works/36402154 (Stranded on the Edge of Forever, 8.5k, this is just flop fic but it was good I like this author she also writes mostly AOS but this is TOS)
• https://archiveofourown.org/works/45457600 (Higher Ground by Gunstreet, 14k, just a like stranded cave away mission fic but it is gunstreet and good)
• https://archiveofourown.org/works/40172535 (This is Hungry Work, 11k, this is just weird sex pollen porn but you should read if you haven't)
• https://archiveofourown.org/works/11610027 (Communication by Jenna, 8.5k, this is like formatted as them sending letters back and forth it's got a kind of funny Jenna tone but is good)
• https://archiveofourown.org/works/575268 (Christmas in Riverside by Amanda Warrington, 16k, this is just a cute getting together Amanda Warrington Christmas fic lmao, it was written for K/S Advent 2012)
• https://archiveofourown.org/works/19732015 (Touch by J.S. Cavalcante, 7k, post-Tholian Web getting together fic, good)
• https://archiveofourown.org/works/43954273 (From The Field by Dovya Blacque from As I Do Thee #2, 15k, This Side of Paradise fic, good)
• https://archiveofourown.org/works/70998 (Cover of Night by Killa, 12.5k, post-Voyage Home but with flashbacks to them getting together before but it's not like established relationship its Dramatic)
• https://archiveofourown.org/works/44571724 (Habit Forming, 11k, fake relationship fic, I don't remember it that well but remember it being good, it's by the same girl who wrote that long fic we both read where Spock tells Jim they're t'hy'la right when they meet)