Jeb Bush, Rand Paul, Kasich, Christie, Romney, probably about = Hillary. Maybe slightly worse just because of their association with the deeply corrupt, heavily compromised and corporatist GOP. But Hillary herself was a corporatist and their policies would have been largely the same. Aside from Paul.
Ted Cruz, Marco Rubio, Ben Carson, Bachmann, < than Hillary. By substantial margins in every case except Rubio.
and, of course, Trump <<<<<< Hillary, and everyone else. Anyone who voted for Trump because they didn't like Hillary is either incredibly ignorant, incredibly stupid, simultaneously selfish and naive, a paid Russian asset and traitor, or just not a good person.
Be careful what you ask for, as you may get it!