What is the best amd cpu under $220??
3600 for gaming
2700x for streaming/video editing
Depends on what your doing with it.
There are good arguments to be made for the 2600, 2700, 2700X, 9600KF, 3600, and 1920X depending on what your doing since your only looking at the CPU price.
Or you may see zero scaling past a Athlon/1600 "AF" and be wasting your money buying anything more expensive.
Depending your tasks in question: