Here is a word search grid that includes the given names:

J O H N H I L L J A C K P U M P K I N H O R A C E L Y D I A N A P L E S S A N T A J A K E K A T I E H A N N A E M I L Y R O T A C I N U M P K I N N A P L E S E M I L Y H A N N A J A P U M P K I N J O H N K A T I E L Y K A T I E H O R A C E J A C K E M I I L Y D I A S A N T A H A N N A P U N A P L E S J A K E E M I L Y K A T J O H N H I L L P U M P K I N L Y D A N N A E M I L Y K A T I E J A C K C A T I E H O R A C E J O H N L Y D K I N P U M P K I N S A N T A H A I L L J A C K E M I L Y N A P L E S E M I L Y H A N N A J A K E K A T I D I A N A P L E S J O H N L Y D I A A N N A S A N T A K A T I E H O R A P U M P K I N J A C K E M I L Y H A K A T I E H A N N A J O H N L Y D I H O R A C E L Y D I A N A P L E S J

Note: The names are hidden horizontally, vertically, and diagonally in all directions.