True, but not really an answer to the question. Unlike semiconductor devices, there is only one "kind" of vacuum tube. A push-pull amplifier with vacuum tubes

True, but not really an answer to the question. Unlike semiconductor devices, there is only one "kind" of vacuum tube. A push-pull amplifier with vacuum tubes requires an anti phase generator before the high and low side drivers, while with both n- and p- type available you sorta get this for free.