Yes, an interesting exercise I did once was to actually draw the dependency graph of auth material (both passwords and 2FA tokens/devices) and accounts, with ed

Yes, an interesting exercise I did once was to actually draw the dependency graph of auth material (both passwords and 2FA tokens/devices) and accounts, with edges where one thing can bootstrap another. E.g., with my password database and master passphrase, I have a password; with that and my OTP backup, I can recover my email account; with that, I can reset other account X; etc. I now make sure I have sufficient backups of the roots in that graph so that losing hardware doesn't lock me out. It's easy to lose track of!