[whpalmer4]

OmniOutliner has a feature called hoisting that could possibly do what you want. Am I correct in understanding that you only need to see one of the lists at a time, and that there is no relationship between the rows in different lists?

The View->Hoist command takes whatever row you have selected (plus the descendants), and displays it as if it is the entire outline. Each list would be a top-level row in your document, and you would select the one you want to view, hoist it, and unhoist when finished.