This is an interesting article (list-icle? It is pretty short and aggregate list like).

It is from 2022 and mainly focuses on pandemic times, so I'd be curious to see what these trends look like compared to pre/post pandemic. I'm sure I could do more digging and find the answers to this, but still I appreciate this, it is interesting.

One thing I think I would push back on though is the remark of 'soft generosity like tipping culture' which isn't mentioned at all in the list. I also would not consider US tipping culture generosity, but more of a social contract/obligation. Someone that does not tip anywhere, except for where they received great service, isn't normally seen as a non-generous person, they're seen as not abiding by the social contract that you have to tip.