Drashos Chazal

Hi Rabbi, in my search to understand the drashos chazal, I find that most of the books written on the subject explain only the 13 middos of Rabbi Yishmael. They are more logical and are somewhat easier to understand. I am trying to understand the other types of Drashos (known by some as the Rabbi Akiva type) Other than the Malbim, Which books would you recommend