I’ve seen pictures of the various home video releases and in the UK, the 1994 vhs release stated on the covers “digitally remastered.” Now this is the originals so can anyone explain how the UK got a “digitally remastered” release while in the US, it was just THX digitally mastered for the best in picture quality.
Because I’m pretty sure the only time the films were truly remastered and restored was for 1997 but those of course are not the originals.

To the OP, the 2006 unaltered dvd is taken from the same NTSC master used for the 1993 NTSC laserdisc, 1995 NTSC laserdisc and 1995 widescreen NTSC vhs. Although similar, the master used for the equivalent PAL versions in those years was not the exact same and was not used for the 2006 PAL dvds.
DVD from a digital master looks better than laserdisc from the same source and surely better than vhs.
Some people prefer the Japanese Special Collection for not having the THX color correction or motion smearing. But the only way to get those transfers is on the laserdiscs themselves or find a dvd copied from them.