The Lottery and Other Short Stories by Shirley Jackson
These were nicely written, though a lot of them felt like character sketches and practice pieces for her later novels. I really came to appreciate her knack for writing a certain type of characters: timid, anxious, and insecure women with or without a cruel, passive-aggressive streak. It's not something you see much of in the modern day, where "permitted" female archetypes are very limited, and it's a strongly feminine set of flaws. If you want Cluster Bs you read Gillian Flynn, if you want Cluster Cs you read Shirley Jackson.