What cards & banks does it work with these days? Last time I checked, it wasn't really a serious alternative.

The whole GrapheneOS thing is a bit of a joke. So you either have to buy google hardware or you run google software.

Anyway, looking forward to the widespread introduction of Wero. Maybe there will be some options for third party roms in the name of digital soveranity. Seems like they want to make the EUDI wallet for digital documents no-google capable for that reason at least.