Three that I know of.
The Eurasian/African one that is the least dangerous and doesnt transmit human to human.

The continental Americas strain that is pretty dangerous(lethality in the 30-60% range) but doesn't spread human to human.

The new kid on the block, the Andes strain, an offshoot of the Americas one. Last Outbreak was in a small town in Argentina in 2018, first discovered 1995, first human to human 1996. ~40 known infections, 11 deaths. Can spread human to human. It has already been confirmed we are dealing with this one.