There is a list maintained by Graphene and community about Graphene OS compatibility:
https://github.com/PrivSec-dev/banking-apps-compat-report
https://privsec.dev/posts/android/banking-applications-compa...
https://github.com/PrivSec-dev/banking-apps-compat-report
https://privsec.dev/posts/android/banking-applications-compa...
If you want to share the list to an acquaintance you can do so directly with a hash to the specific country, e.g. https://privsec.dev/posts/android/banking-applications-compa...
Thank you for sharing.