QuickBASIC or even Visual Basic 1 immediately come to mind. They have good, discoverable navigation and documentation.
I have no idea where you'd be able to find it since it's a proprietary product but InfoLease 9 had one of my favorites TUIs from a long gone era. You could navigate through and edit complicated contract information extremely quickly through a series of fixed number based menus and views. Once I got the hang of it I could blaze through entering tons and tons of data without any effort. I suppose a lot of BBSes had a kind-of similar interface but without the field validation and documentation (you could write ? virtually anywhere to get quick documentation about what you were editing or what something was intended for, and fields were validated in this really "perfect" way where it never felt like you lost time if you fat-fingered something).
I have no idea where you'd be able to find it since it's a proprietary product but InfoLease 9 had one of my favorites TUIs from a long gone era. You could navigate through and edit complicated contract information extremely quickly through a series of fixed number based menus and views. Once I got the hang of it I could blaze through entering tons and tons of data without any effort. I suppose a lot of BBSes had a kind-of similar interface but without the field validation and documentation (you could write ? virtually anywhere to get quick documentation about what you were editing or what something was intended for, and fields were validated in this really "perfect" way where it never felt like you lost time if you fat-fingered something).