My 7y has enjoyed playing with Polly Pocket for he last 3 years or so. She has the ones with the rubbery clothes rather than the magnetic clothes - she prefers the former as she says less fiddly to dress. DD has a few of the bits - car, boat, etc and all hve stood the test of time.
Anther similar product DD likes, even more so than PP, is Animal Hospital. She has a fair few bits now and again they are standing the test of time. Also, handily, they are a very similar size to PP and can be used along side them. DD's PP dolls have cruises on the PP boat and go on safaris in the AH vehicles to see the various animals.
DD also has sylvanian family but these are more expensive and TBH DD plays with PP more. The SF do look nicely generally - not quite so bright and brash plastic - but that is a gron up view point, rather than a 5y old I actually think that I wish we'd gone for Playmobil rather than SF in hindsight.