The only thing you can find online is usually catering to rich western tourists or "expats" and usually boils down to "Which place is the most western/ High GDP and McDonalds!" so I'd rather get an opinion from someone that's been there that isn't a business tourist.
I've only been to Chengdu, which I thought was fantastic. Weather seemed decent, has excellent food, beautiful natural scenery nearby, amazing museums/history, pandas, Sichuan opera, extremely friendly people, and it also has a reputation for being the gayest city in China:
Also, while I think it is a tourist hub for people in China (especially the panda research center), I saw no other westerners the whole time I was there, so you're unlikely to see anything specifically catering to expats like you described.
Chengdu is also great. Best food in the country. Very developed, a good look at a modern chinese megacity outside of SH/BJ/SZ/GZ.
Gaiwancha in people's park face-changing show and sichuan opera pink little panda babies at the resarch base
Removed by mod