For UK banks on my Graphened Pixel 6a I can use the apps for HSBC, First Direct, Barclays, NatWest, RBS, Co-Operative Bank and Metro Bank with no issues, and have only had trouble with the Lloyds Bank app as of an update from maybe 2-3 months ago which throws an error saying they've detected I'm using a jailbroken/rooted device
I get a message that the device is not secure but I can still make transfers and such from the banking app on a rooted OP9Pro.
Never tried to use NFC payments though.