I feel like this might be common knowledge but what seems to be a good mixup is j.B (crossup), double jump back, j.B. This can also be mixed in with attacks from the same side twice. If you do a jump from a run, this will only be on one side. However, to make a double crossup from a run you can do j.B (crossup) , double jump back, j.2C. Sho flips back to the other side instead