Except for Water, Electric, Ground, Psychic, Ghost, Dragon. Fighting and Poison as well, if type combinations that don't exist count.
By the way, even if Steel is a pretty bad defensive type right now, Ghost/Steel is still quite nifty, even if it's not as great as before. 3 immunities, 6 resistances (9 before Steel nerf). Sure, it also has three weaknesses to Fire, Ground, and Dark, but it's still neat (it resists Psychic + Fairy combo, if it counts as something).