Was there a hierarchy within the profession of Lamplighter?

Yes, there was a hierarchy within the profession of Lamplighter. The highest-ranking lamplighters were known as "chief lamplighters" and oversaw the maintenance and operation of the lamps. Below them were "senior lamplighters" who had more experience and were responsible for training and supervising new lamplighters. The lowest-ranking lamplighters were known as "apprentices" and were responsible for carrying out basic tasks such as lighting and extinguishing the lamps.