Just a heads up for those who are using GrapheneOS. If you log into 2 (google or other) accounts on an installed app even on different profile, the service provider will still be able to link between your 2 accounts using MediaDRM. (Google will still know that both of the 2 accounts have been logged in on the same device)
More info:
Browser can work but yeah there limitations like depositing checks.
With that being said… Its a fucking banking app, it already has your PII. Sandbox mode limits what it can get off the phone at least