Did the nobility usually start revolutions?

Were revolutions usually started by the nobility?

Aristocratic rebellions commonly seek control of the existing system. A revolution, in the distinction used here, changes the system itself.

Competing nobles can rebel because each wants to become monarch. Replacing a ruler can leave the structure of government intact. A revolution, in the distinction used here, changes how the system works. The Glorious Revolution is an example because its settlement altered the distribution of political power.