In the Fediverse community context, I would say you have "Instances", "Communities", and "Users". Most communities operate in as a Benevolent Dictator .

Which is defined by the template like this: The Benevolent Dictator holds ultimate decision-making power, until the group is ready for a more inclusive structure.

• Values: Servant leadership, singular vision, voluntarism
• Membership: Participation is open to anyone who wants to join, but the Benevolent Dictator can remove participants at will.
• Autocracy: The Benevolent Dictator has authority and can change the group's governance as necessary.
  • Delegation: The Benevolent Dictator can invite participants to help with managing the group.
  • Expiration: When the group is sufficiently mature, the Benevolent Dictator will establish a more inclusive structure.
  • Executive: The Benevolent Dictator is responsible for implementing—or delegating implementation of—policies and other decisions.
  • Lobbying: If participants are not happy with the Benevolent Dictator's leadership, they may voice their concerns or leave the group.

With the dictator being the Admin at the instance level, and the Mod at the community. With users being able to choose to leave to other dictators if they disagree with how they rule. A lot of these are implicitly allowed in the structure of lemmy, but if you wanted to explicitly define them, I am not sure what the best way would be. I.E. The Lobbying, how could you define how that is allowed or expected. Or defining what powers the autocrat has and explicitly saying to whom is delegated too at the moment.

There is also the idea of tooling to help move from dictatorships to something like elected boards or petition or even jury.