Currently, to aggregate all the person.* states, it requires manually creating a group of every known person (and maintaining that as you add new people):
group:
any_person_present:
entities:
- person.ron_burgundy
- person.james_bond
- person.indiana_jones
- person.harry_potter
- person.han_solo
There should be a single sensor that aggregates all the person.* entities into a single sensor that can be checked in automation so this kind of manual grouping is not required.