Max Steiner and Erich Korngold are for me better examples of this influence, since Steiner in particular pretty much invented the first modern film score with King Kong.
Danny Elfman, he of Oingo Boingo as well as film music, wrote a violin concerto and has a concert in San Jose in a few weeks:
https://www.dannyelfman.com/events-posts/san-jose-ca-violin-...
Interesting question: what's more common, classical --> pop, or the other direction?
Before you answer too quickly:
Paul McCartney
Billie Joel
Stewart Copeland
Danny Elfman
But anyway, probably classical --> pop is more common.
Follow the money as they say.
That said, music is a form of communication, and there is and always has been a tremendous amount of cross-fertilisation and inspiration from other forms, whether you're talking traditional melodies adopted in classical composition (Dvorak's Slavonic dances, for example), Gershwin adopting jazz (Rhapsody in Blue) or western music (Copeland in Rodeo), or popular music taking up themes from classical works (Sting's "I hope the Russians Love Their Children Too" quoting Prokovief's Lieutenant Kije, the Beatles quoting Beathoven's "Ode to Joy" in "All You Need is Love", and Led Zepplin's quoting from Mussorgsky's "Pictures at an Exhibition" in "Kashmir").
As well as, of course, wholesale popular adaptations of classical music and vice versa, and performing and composing in different genres.
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Notes:
1. <https://medium.com/@AmericanPublicU/popular-classical-music-...>
Also, Hanson's 2nd Symphony, 3rd Movement: https://www.youtube.com/watch?v=abKXHeG0u6I&t=1267s