by the way - I was referring t El Cid - the score by Miklos Rosza. Ten Commandments - the score by Elmer Bernstein. Both of those huge epic string sections with orchestrations that make Zimmer and the current standard of reference laughable.
However, Terminator is total analog synthesizer and Eraserhead essentially musique concrete. Another example of "cinematic" - the scores by Roy Webb to Val Lewton's great series of horror films in the 1940s. Those had strings sections that would be Chamber Strings alone, at most. Tiny, yet the best string scoring of that time, beautifully impressionistic scores for "Cat People," "Seventh Victim" and "I Walked with a Zombie" that are like Debussy in their transparency of sound.
But what does it matter? Nothing. I just brought those up to show that "cinematic" can mean other things than current conventions.