Well, to do a wipe, all the layers must exist, so that can be done in almost any NLE, even Resolve, by cloning your example material to as many layers as there are nodes (perhaps) and then eliminating/shutting off the nodes in the various layers that you want to illustrate… going back from your full final grade to the uncorrected original.
There is another approach, and that is to use a “butterfly” split, so the same clip, wiped down the middle and flipped, is original on one and full grade on the other, so that the same subject material is exhibited left and right.
If it’s your own camera work that you are demonstrating, no worries… some cinematographers object to having their source footage uh…. subjected to being exemplified. If your grade is mostly about unpacking S-Log encoded media, its also kind of an unfair comparison since we don’t really know what the source exposure range might have been.
In the end, is the value of a split-screen about “Here is what I did to fix it, or enhance it… or did we get to where the producer felt it propelled the story?”
jPo, CSI
“I always pass on free advice — its never of any use to me” Oscar Wilde.