There are 8 Types of Ochos in Argentine Tango.
1.) Milonguero (Or “Lazy”) Ochos.
2.) Linear Ochos.
3.) Traveling Ochos.
4.) Circular Ochos.
5.) Over-Rotated Ochos.
6.) Anti Ochos.
7.) Milonga Ochos.
8.) Dynamic Ochos.
Please see the related Article/Video for more information.