Cult classics are tricky to rank, generally. Mainly because they do not earn their immortality the usual way. They are not simply great movies in the consensus-awards sense.
They become sacred because the people who love them really love them. Just because. They get quoted for decades, passed from older siblings to younger ones, rediscovered in college dorms, midnight screenings, shabby apartments, and lonely phases of life when a strange movie feels like it understands you better than people do.