6.22.0+ versions will NEVER work with Graphene OS.
The reason is they implemented the new Google Integrity API; They are explicitly checking for signed OS images only, similar to how Google Pay will never work on Graphene OS (without root and a bypass).
The day they drop 6.21.1 support is the day I switch credit unions.
Navy Federal's app has 21 trackers in it anyway, some other competitors are more privacy respecting and have only sentry/google analytics instead of additional crap.
Not recommending the cu (I have not used them), but as an example if you compare Alliant CU's app vs Navy Federals... it's clear which one is more privacy conscious.