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For more on marking an answer as the "Best Answer", please visit our FAQ.Cheetah (Acinonyx jubatus) is in a separate subfamily, the Acinonychinae, so it's neither a pantherine nor a feline. There is only one living species. All modern cats fall into those three subfamilies, and the extinct sabretooths made up a fourth (the Machairodontinae).
There is only one species of tiger (Panthera tigris), but there are a number of subspecies -- which are all extinct or extremely threatened.
This pages give information on each of eight subspecies, three of which are (very recently) extinct: