OIDC for staff members?

Is there a built in option or extension that would allow login to self hosted Ghost using OIDC?

That would be pretty awesome - as I rely on multiple of services I ended up using external IdP whenever I can, so I can use the same login in each service and also so I’d have centralized place for managing users.

There’s nothing built in. Ghost does password-based login backed up with 2FA.