> There are two ways to log into macOS: a local user account or an LDAP (e.g. OpenDirectory, Active Directory) account.

And just in case it wasn't clear enough, I'd add: a local user account is standard. The only way you'd end up with an LDAP account is if you're in an organization that deliberately set your computer up for networked login; it's not a typical configuration, nor is it a component used by iCloud.