Resolved: Get the 3 max value in a Map

{Peter=[Leigh], George=[Barron, Trickett,Evans], 
 Paul-Courtenay=[Hyu], Ryan=[Smith], Toby=[Geller, Williams], 
 Simon=[Bush, Milosic, Quarterman,Brown]}

Simon: 4  
George: 3  
Toby:2

Map<String, List<String>> lastByFirst = PeopleProcessor.lastnamesByFirstname(PeopleSetup.people);

var store = lastByFirst.entrySet()
    .stream()
    .collect( Collectors.groupingBy(Person::getLastName,
                Collectors.counting())
    .toString();

Simon: 4  
George: 3  
Toby:2

import java.util.Comparator;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

public class Demo {
    public static void main(String[] args) {
        Map<String, List<String>> lastByFirst =
            Map.of("Peter", List.of("Leigh"), "George", List.of("Barron", "Trickett", "Evans"),
                   "Paul-Courtenay", List.of("Hyu"), "Ryan", List.of("Smith"),
                   "Toby", List.of("Geller", "Williams"), "Simon", List.of("Bush", "Milosic", "Quaterman", "Brown"));
        List<Map.Entry<String, Integer>> topThree =
            lastByFirst.entrySet().stream()
            .collect(Collectors.toUnmodifiableMap(Map.Entry::getKey, e -> e.getValue().size()))
            .entrySet()
            .stream()
            .sorted(Comparator.<Map.Entry<String, Integer>, Integer>comparing(Map.Entry::getValue).reversed())
            .limit(3)
            .collect(Collectors.toList());
        System.out.println(topThree);
    }
}