are not exhaustive,
I only mention what seems to me most interesting or specific)
Walt Disney Company
Bruce Hamilton Company
BHC's parent company, Gladstone, was in charge of the Disney comics from 1985 to 1990 and from 1993 to 1999; its sister company, Another Rainbow, produced lithographs and statuettes.
(Deutsch & English)
This German company sells various Disneyana and used to produce gorgeous calendars figuring some of Barks' oils.
Goofy Stuff, Animation, Hercules