Hi I looked at your chart (Kiss)and I have a question.
I am looking to buy a used dryer, the receptacle on the wall and the plug to my old stack washer dryer are NEMA 14-30 , 30 amp according to the chart. I want to get a stack washer dryer that is NEMA 10-30 , 30 amp and will not plug into my receptacle at the wall . How could I do this in a simple way as I have no understanding of electrical, so I can keep and use this dryer?

Change the whip coming out of dryer to match receptacle. The two outside wires go to hot and the middle one goes to neutral.