Answer:
Minutemen
Native American actually sided with the British with the hope of regaining lost land to the Americans.
Slaves could not participate the war because you know, they are slaves and some free black men joined the American side with the hope of being free for their service.
Quakers were against every violent action in the revolution, they did not side with anyone.
The only option remains is “Minutemen” as they were civilian colonists but served as the American militia.