Do banking apps work normally if downloaded from the aurora store? I'd very much like to fully degoogle my next phone when I get to replacing it, and it's the last stumbling stone
I believe there are reasons this isn't a solution for everybody, but I just use the mobile website. Works for me, and probably a lot of people. I'd rather not have the app on my phone anyway.
Absolutely. You should check out the list [1] to see what banking apps are verified working with GrapheneOS. It's worth noting if your banking app isn't on this list it does not mean it will not work.