Yuri doujinshi with good stories?
I feel like I'm missing out on a lot of good manga just because they're dj. Any series or pairings will do as long as it's good.
Heart Panic Kotori-chan is a cute Love Live doujin I'd recommend. Also for Love Live, anything by Karuha gets a recommendation from me. She mostly writes adult life NicoMaki so no previous knowledge of the characters is necessary.
Speaking of good stories, there was this amazing Kantai Collection doujin Nakatani Nio drew before getting serialized... But it will never be completed.
Oh, I just remembered a Touhou doujin I haven't got around to reading yet, but back when it was released an impressive amount of people said it was one of the best things they'd ever read.