There's one book that's become one of my favourites in recent years. It's not a book that's part of a series, which is something that's starting to become harder to find, but what it is is quite an original take on the dystopian genre. It's The Book of M by Peng Shepherd. It's post-apocalyptic fiction blending magical elements. Rather than the trope of zombies, it starts with people losing their shadows, which then leads them to lose their memories, which in turn leads them to gain mysterious powers. It's dystopian fiction with heart, and it's absolutely beautiful. I so wish more people would know about it.
I think I saw that one when I was looking around at post-apocalyptic stuff a while back, it sounds familiar.