You can check this crowdsourced list for the compatibility of banking apps: https://github.com/PrivSec-dev/privsec.dev/blob/main/content...

Authenticators should work normally, as far as I know (unless Google Authenticator does anything special). Can’t say anything about Google Wallet. There might be more lists/forums where people share which setups are (not) working well for them.

In general, I had these concerns as well until a few months ago. But I am much more optimistic these days that things will just work well out of the box (have read many positive sentiments in blog posts and here on Hacker News).