To me, “genuine, old school” would suggest that they felt the calling before the old rules changed — before 1935. Thus they would have had to have been born before 1915. So they are all dead. The ones I knew as a child seems like any other JW, just older.
Whereas any “new partaker” that I have known has had issues with mental illness, usually bi-polar. Additionally, I think that anyone who really thinks they have this special personal calling from God to rule over all their JW peers has to at least a bit narcissistic and an inflated opinion of themself.