I would say for me the most influential was Ray Franz.
As a kid i grew up fearing the man. My father used to say that he was the greatest opposer of the watchtower society. In my young mind I thought he was an evil man.
Years later,I had the privilege to speak with him, I was ashamed of myself for thinking ill of this kind, gentle man. When he died I was really saddened. Hubby used to correspond with him and sometimes we re read his kind letters.