incol said:
I think classab also has crossover distortion, the more bias current, the less distortion.
No.
When the idle current in the output transistors is correct at about 20mA to 60mA, the crossover distortion is gone. When the current is higher then a different type of crossover distortion is produced.
You cannot see crossover distortion on an oscilloscope nor hear it from class-AB audio power amplifiers and audio opamps.
Some extremists take an OPA2134 audio opamp that has distortion of only 0.00008% from their class-AB output stage and add a load resistor to operate its output in class-A to "reduce?" the distortion.