Most were your typical big fish in a microscopic pond. They would have amounted to "below average" in the real world.
There was one CO that stood out in my JW career. He was Lebanese (Had served in Lebanon during much unrest) and was truly just a slave for the society. He and his wife pulled a 6 ft camper that they lived in. It did not even have a bed, just 2 benches for the table. Those benches, with 1 inch green cushions, were the master bedroom suite (and this couple was not young). Whatever money the brothers gave him during the week, he would take that amount off of his weekly congregation expenses. He would never, ever take gas money even though he always drove. He had little personality, just a desire to serve his god in the only way he knew how.