I think the most widely known is John Williams. That man is a genius.
I loved Elfman and Jablonsky too. I don't know who the other two are though.
Samuel Barber is good, but I pretty much only know him for his Adagio for Strings (Check that out if you never heard about it)
And I know it's cliche, but my favorite classical composer is probably Beethoveen right now. Symphony No.5 and Moonlight Sonata are my favs fro mhim.
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