The 4WDs w/o manual hubs have either dashboard controlled hubs or automatic hubs. But, they have locking/unlocking hubs. IF they don't they are AWD, and there is no 2WD with AWD.
The '94s were available with dashboard controlled hubs or manual. I chose manual because I was told they were more robust than the electric ones.
A system such as you describe on your Jeep... is new to me.
http://en.wikipedia.org/wiki/Jeep_fo..._drive_systems
Looks like Jeep used a plethora of different systems. What do you have?