I think there are more NPGs in the org than one would think. Some marry to fit in with their congregation but the ones I knew left to live their true lifestyle.
When I was younger there was an openly gay JW in our congregation but he eventually left to live a gay lifestyle. He was never disfellowshipped as the elders figured he was 'touched' in the head and would be corrected in the new system. All of the young kids loved him...he was always very happy and very over the top.
Friends of the family, there daughter married a gay JW. However, she didn't know he was gay but the elders in his congregation knew it. Well about 5 years and 2 kids later, he had an affair with another JW male and confessed to her that he was always gay. Her entire family was devastated that no one told her that the JW was gay. The funny part about was a lot folks from his congregation thought it was obvious and simply thought she was desperate. He's DF'd and they are still together and from what I hear, he's still gay.
There was a lesbian(s) in our congregation but I never figured out who it was. There was a local needs talk about women dressing modestly because of sisters with lesbian tendencies
Finally, one day a group of us were out to dinner and a male JW friend said he had something to tell us. He told us that he was gay and could no longer remain celibate. He told us that he was going to talk with the elders the next day. He was df'd the next week. He and his lover of several years regularly attend the sunday meeting.
Hmmm...guess I don't know any NPGs.