Try the setup below, I’ve sketched out the basic components that make it work. From there, you can share a view of the Conditions table publicly.
- Base
- Table, [Members]
- Linked Record field, to [Conditions]
- Table, [Conditions]
- Linked Record field, from [Members]
- Count field, {Link from [Members]}
Note that if a member satisfies multiple conditions, they will be counted individually for each condition. If you prefer to show people associated with multiple conditions in their own group, then you would instead share a view of the Members table, grouped by conditions.