Considering one has extremely worldwide merchandising viability and the other barely gets products, I think the world at large tends to favor one of these over the other.
I'm gonna go ahead and pick that 3rd character in the background because man does he look awesome 😆 but in all seriousness I'm gonna go with two-face I've had enough joker for a very long time (:
I like both and think they both bring something very unique and complex to the Batman mythos, but I chose Harvey because he often goes underappreciated and Joker is often overappreciated