Freedom Ticket solely by virtue of probably giving Gore at least 538 more votes in Florida.
Lieberman definitely brought in votes in Florida, too, so who knows. (It's probably true that Lieberman added very little to the ticket, but Florida is maybe the only place that mattered where he helped.)
Edwards as Gore's VP pick would have been a perfect mirror for Clinton's pick of Gore in 1992 and another double-down on the South. I think it could have worked as a lot of Southern states were pretty close in 2000. But it also may have flopped, so who knows. Too many variables.