I just started working for Patreon so it might be a bit early but I love the culture, and it has many of those traits. I have also studied building cultures for my own previous startups before and they do a lot right.

- Encouraged PTO (they suggest one week a quarter) - A lot of quiet / introversion rooms as well as space to be chatty - Full normal health benefits AND mental health benefits (emotional counseling) - Mental health days are totally accepted - People WFH as they need (though encouraged to be in the office) - A large personal development stipend ($3K/yr)

----------------

They also provide a lot of other aspects that I think play into the culture, but really it's the people that make it for me. Everyone really cares about the mission.