The absolute best rips i have seen are the editroid, but they come from the japanerse laserdiscs so they have burned in subtitles. Some other did them from the US laserdiscs and VHS tapes.

But those were never remastered digitally or had digital sound.

Classic Creatures, and From Star Wars to Jedi were only ever released in other territories on Laserdisc.

I have the french release of from star wars to jedi, but it is in pal and i am not sure if its dubbed or burned in french subtitles. I do know it is analog audio only and from a non remastered source.

The making of star wars, and SPFX were released in pal in the nineties in the UK and those apparently were the last English language releases.

These apparently were also in the executor box set in Europe.

Making of Star Wars and SPFX were released on Betamax in the states as well as CED. CED would be a bad source, but if you could find some sealed copies without tape rot of the betamax perhaps they would yield a better image than the VHS, i dunno.