Roughly speaking, there are the following types in our economy:
1. Producers / builders / manufacturers
Everyone part of a production process and anyone who produces something, that others want / demand, e.g. Journalists, car factory workers, software developer, hardware producers, clothing producers, farmers, house builders, ...
2. Service offerers / providers / suppliers
Everbody, who offers a service, that others need / demand, such as hair cuts, medical services in hospital, taxi drivers, teachers, coworkers at digital service industries, cinemas, public and private transport, security service from bodyguards, energy and water suppliers, ...
3. Traders
Everbody who trades (mostly products of producers, but also derivates, foreign currency swaps, free timeslots, ...)
Mixed types of 1. 2. 3. are usual
4. Members of trusted institutional authorities:
People, who work as judge, authorities, who sign you a valid driving license (not a snake oil driving license), everybody who works at a trustful state, companies or workers association, foundation.