I wouldn't know what's the big fuss about not using the List Editor, as it's pretty much the easiest and fastest way to view lists. STAT + ENTER and you're there, instead of taking the time to program and typing in list names and so forth.
But, in answer to your question… there's Pause [List] for scrolling through individual ones at a time, the easiest off the top of my mind. But to show three lists, it'll probably get real complicated real fast. You'll have to first, take the time for the user to input each list name, then utilize either the home screen or the graph screen to display the three lists on the screen.
After that, you'll probably need to put in some movement code as most likely the list won't fit on the screen, enabling you to scroll down each individual list. You'll also have to remember to post the element of each list somewhere in the corner, if you'll even have room to on the Home screen, which I severely doubt.
Then you'll have to take in account of long numbers that stretch past their boundaries, so a code to truncate them will be necessary…
It's just a heck of a lot easier pressing the two buttons bro. Even with all that, you won't even be able to edit them directly, and will have to go to the List Editor anyways. :P
EDIT: So probably the easiest method from there USING the List Editor would be to add the following chunk of code after it. It'll open it up in the Editor and be right there waiting for you when you exit the program.
And, by the way, that "Stop" isn't necesary. Replace it with a quotation mark (") if you want to remove the annoying "Done." message at the end.