let persons: [Person] = [
    Person(name: "Irma Burgess", phoneNumber: "11-22-33"),
    Person(name: "Lester Davidson", phoneNumber: "44-66-22"),
    Person(name: "Irma", phoneNumber: "11-22-33")
]

let distinctPeople = Dictionary(
    persons.map { (key: $0.phoneNumber, value: $0) },
    uniquingKeysWith: { $0.name.count < $1.name.count ? $1 : $0 }
).values

print(distinctPeople)