Fanfic Recs
Starring OCs
Alexandra Quick series by Inverarity - if you haven't heard of this, where have you been? A fantastic tale of adventure and intrigue set in the American wizarding world as envisioned by Inverarity (prior to JKR releasing info about Ilvermorny) it features and all OC cast of characters and incredible worldbuilding and politics and it's just so good. Also the longest of my recs by far.
The Rebel Snakes by linnythings - this is an AU that involves worldbuilding, linguistics, and canon characters interacting with an OC
Golden Trio/post canon
Dudley's Memories by Paganaidd - a story of reconciliation set post series
Slytherin Career Day by cambangst - a comedy starring Snape and the Slytherin students from Harry's year