I have never instructed to make money or build hours. Most of my instruction has been at clubs or given for a couple of beers per flight hour to friends and partners in aircraft ownership. When I had 150 hours in gliders, and had earned a Gold and 2 diamonds, I though I knew enough to pass something on. That glider CFI rating later became a CFII but never a multi CFI as I simply did not have the experience I thought I needed in MEL.
I probably don't fit neatly into the type A or type B box. However, one of the most satisfying experiences I had as a flight instuctor was to talk a a glider intro ride "student" down to touchdown on his first flight in any aircraft. Sometimes the student and instructor just click and the instructor has confidence the student will respond to instructions.