I remember the Harry/Dudley shaking hands scene had some massive green screens. I’ll have to see if I can find which of your links has that scene.
Edit: Technically, SORCERER’s Stone and Chamber of Secrets have official extended cuts, but they definitely were not done very professionally. I think it was most likely someone at ABC not Warner.
Chamber of Secrets had obviously recycled shots, wrong music cues and various other issues. I’ve been sticking staunchly to my extended DVD only because all I see are the seams when I watch the retail version.
I can’t recall anything in ‘Stone’ that smacked me in the face (of course I didn’t spend hours dissecting all the scenes either), but even just going over the official version and dubbing in ‘Philosopher’ wouldn’t be awful.
JJPotter, if you wanted to add those to your impressive collection here, there is a reasonable argument to be made for the effort.