Or let me put it another way: anyone running LineageOS but struggled to run any essential apps? (I don't care about games or whatever, I mean the apps you need to get around in life).
They use Google SafetyNet as a security guarantee and some outright ban access while letting you use a completely custom Linux PC. There are ways to hack those API calls with various system level interceptors like Magisk. I keep a custom made 2FA code generator from my bank as a backup though.
However Sparkassen, Deutsche Bank etc all refuse to work on Lineage OS at all *without any actual root solution installed*. I actually don't want any root access, I can use recovery mode and even write special permission XMLs if certain apps need it.
I just don't want bundled Google Dialer etc in stock ROMs that is feeding more data to Google about me and my loved ones. I keep my and my family's contacts in a private cloud solution. I don't use GMail for private e-mails. Nor Google Calendar. Removing these apps break stock ROMs due to special permission modifications Google did. Lineage OS is my escape but the stupid banks reliably choose stupidest security theather solutions that you were forced to implement.
My original motivation for deploying this particular phone was for Cisco Duo, which also runs on it.
Amusingly, my health insurance app (Tk) does not.
In this comment I mentioned N26 and Scalable Capital also works with a custom ROM: https://news.ycombinator.com/item?id=42560775
As for banking apps, it depends. Some work, some don't. One way to test it would be to use Waydroid emulator on Linux, which uses Lineage OS image.
It's completely absurd, but it's how it works today.