In movies, didn't they use anything else than Kodak Film?

Go to early 1940s (Casablanca), Imdb says Eastman Film, which is black and white Kodak Eastman Film.

Go to 2000s, Imdb will keep saying it is Kodak, Kodak, Kodak, nothing else, unless Digital.

Looks like Kodak had been the only film brand for movies before Digital.

I know Germans used Agfa. Americans used Kodak, only Kodak, nothing else but Kodak, in all these years of movie making before Digital took its place.

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In 1950s, Kodak Eastman became in color which was called Eastmancolor. Even Technicolor movies used Kodak Eastmancolor films.

Movies from 50s shot in Kodak Eastmancolor

Movies from 90s shot in Kodak Eastmancolor

Movies from 2000s shot in Kodak Color Film with different name.
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Black and white ones were shot in Black and White Kodak Eastman
In movies, didn't they use anything else than Kodak Film?
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