This is a good start! I think we need something like a ProtonDB for this sort of thing, but that covers all apps, not just banking apps.

I do see five banking apps I use listed there as working, which is great. But -- and maybe I'm being unnecessarily overly worried about this -- what about the future? What if I've been using Graphene for a year or two, and one of the ones that's critical for me changes how they operate, and Graphene no longer passes muster as a platform it will run on. I'm not afraid of this happening at all running Google's stock OS image, but once I do my own thing, I get to keep the pieces when it breaks.