I don't know enough of Rachel Portman and Clive Mansell but they might be good choices?
Rachel Portman is good at lush and romantic. I've never thought of her scores as bombastic, but she is heavy on recurring themes.
I was thinking Joel McNeely (Shadows of the Empire
and lots of Disney work), Ron Jones (the good Star Trek: The Next Generation
scores and a lot of video game work), or John Debney.