Those men you listed were the most wealthy and powerful individuals in Boston in 1775. They were all considered "gentlemen" which consists of property ownership, wealth, and freedom from manual labor, meaning they had time for politics because they had people to do their work for them (slaves, servants). John Hancock had one of the most extensive list of dependency of anyone in the colonies according to Gordon Wood. But this socioeconomic hierarchy is what got turned on it's heels during the revolution. It was what made the revolution so radical in that the whole class system, basically society, was eliminated from the colonies. Common men started earning their own money and dressing like these "gentlemen". They bought luxuries for their homes and pretty soon you couldn't tell the gentlemen from the common men. So they would start to be called "Mr. Adams" or "Mr. Hancock" at this time rather than Esquire Adams or Lord Hancock. The whole attitude of "master to servant" or "father to son" (which were both seen in the same paternalistic light) was changed and people were given a more equal footing in society. In a relatively quick time, colonists went from revering and humbling themselves before people of higher societal rank, to scorning and violently rebutting any show of social superiority. Even though they themselves expressed disappointment in the eventual onset of democracy over a more virtuous, republican government, the revolutionary leaders did succeed in eliminating the classic hierarchy of England in the new country.