Sulfur Ions

• Sulfide: \(\ce{S^-}\) (Oxidation State: -I)

Sulfur Oxyanions

They are ions of Sulfoxylic Acids (acids of Sulfur, Oxygen and Hydrogen)

• Sulfoxylate: \(\ce{SO2^{2-}}\) (Oxidation State: II)
• Sulfite: \(\ce{SO3^{2-}}\) (Oxidation State: IV)
• Sulfate: \(\ce{SO4^{2-}}\) (Oxidation State: VI)

Some more (from Wikipedia)

• Thiosulfate: \(\ce{S2O3^{2-}}\) (Oxidation State: IV (V and -I))
• Pyrosulfate: \(\ce{S2O7^{2-}}\) (Oxidation State: VI)

Wikipedia has more.