actually they are all staff_u users, because Fedora currently bugs out with user_u GDM logins. But the main diff between staff_u and user_u is the ability to sudo, and when an account is not in the wheel group, then they can't sudo, no matter what the selinux policy says.
And I have also made requirements for Yubikey for login and sudo. Unlike pesky M$ and their requirement for Entra ID (azure) to do token logins, Fedora just works. No key, no escalation. Had my Yubikey for 10+ years already - definitely worth the investment of $50.(2x keys). Google Advanced Protection uses it, so all my google accounts are protected with phish proof hardware token 2FA.