Since agents work on commission, they are looking for books they can sell and make money from. Those don’t necessarily match what books are the best sellers. Some very popular categories don’t sell for high contract prices, meaning less commission to the agent. Agents are looking for the high dollar contracts. If you want to appeal to an agent, these are their most common requests:

1 Young Adult
2 Fantasy
3 Literary Fiction
4 Children’s
5 Science Fiction
6 Thrillers/Suspense
7 Middle Grade
8 Romance
9 Historical
10 Women’s Fiction