Ranked system of groups that increase in inclusiveness?

A ranked system of groups that increase in inclusiveness typically starts with the most exclusive group, such as a closed club or organization that limits membership based on specific criteria. Next, it may include open clubs that welcome a broader range of members but still have some restrictions. Following that are community organizations that actively seek diverse participation and promote inclusivity. Finally, the most inclusive group would be a public forum or platform that encourages and embraces participation from all individuals, regardless of background or identity.