The rarest type is the only true rebel...which leaves us with a Mastermind Rational or Counselor Idealist, statistically speaking. Though being utilitarian rather than cooperative, an extra point goes to the Mastermind Rational.
You know, I changed my mind. I don't think any SP type would make the best rebel. They are too mainstream and moderate. An NT type on the other hand is more likely to take extreme measures to alter the architecture of the construct society has boxed us in. SPs also are more likely to take the conventional route, whereas NTs might try something really crazy. NTs also like to argue with people and really challenge things in order to implement new innovations. This would make one of the NT types the best rebel in my opinion. SPs would probably make average rebels, and NFs would probably just get along with the convoluted rules and restrictions the SJs impose. What do you folks think?