Community can have some really great writing (dips in season 3 4, but recovers in 4 5).
30 Rock, Parks and Rec (particularly picks up once two new members join the cast), the Good Place, and Brooklyn 99 are all usually pretty light hearted and fun.
Scrubs can be very funny, but also has some somber episodes where you'll find some of the best writing is the series. Generally more fun than grim though.
The writing quality in how I met your mother was good for the first few seasons, but dropped off in the latter half.
Friends was pretty consistent, but not as good as some of these others, for me at least.
The Oreville is inspired by Star Trek, particularly shows like the Next Generation. That's a good series with some great episodes, but has some filler lower quality between. Not as silly as the Oreville, but some are still fun. Others are interesting or exciting in a variety of ways.
I haven't watched What We Do In The Shadows, but it is on my list for the same reason you asked the question.