I need a feature to block my bank's incessant nagging about cash-back deals while keeping the ones about transactions.
Right now on iOS there is no way to do this. And yes, I've explicitly turned off the cash-back deals notifications in my bank app's settings and that is completely ignored.
I don't know if there's an iOS equivalent, but Buzzkill on Android is really great for this. I set up filters to hide all the stupid Amazon ad notifications.