Weird. I have it running on my pure GrapheneOS without GPlayServices…
Discussion
It's the 2FA. My account is setup with a hardware 2FA so it defaults to that. It didn't tell me that was the problem, but it works if I use a backup code or OTP. Lame, but it works. Thanks for the input!
Thank you for sharing! Until I find a place where I can get a hardware 2FA, I am using OTP; your experience will help me when I configure the key!