I bought switches similar to the ones you have in your picture. Little rectangular switches.
Worst mistake I ever made.
My enclosure is 14 gauge steel, and cutting those little rectangles was a real PITA
Switches that install through round holes would have been a much better solution for me, because drilling a hole in the steel was easy. Cutting rectangles was not.
If your enclosure is plastic, then the rectangles will be a hell of a lot easier that it was for me.