LucasArts in GOG lists only one game, Indy3.
Lucasfilm Games in GOG lists 30 games, including those published with the LucasArts name.

Indiana Jones and the Last Crusade(Indy3) is published before the Lucasfilm-to-LucasArts-renaming, so it should be listed in Lucasfilm Games, not LucasArts.

The VGA version which GOG are selling now, still showed Lucasfilm Games in game.

Seems that the EGA version from 1989 is from LucasArt and the VGA version from 1990 is from Lucasfilm.

The renaming is happened AFTER VGA version.