That's a sad question!

There's a government website that lists these 4 main types of leukemia. The four main types of leukemia are:
Acute lymphoblastic leukemia (ALL)
Acute myelogenous leukemia (AML)
Chronic lymphocytic leukemia (CLL)
Chronic myelogenous leukemia (CML)
The website talks more about various types of cancer and less about the probabilities for getting the different types of leukemia, however you can read there some general statistics for the illness:

You can read about on leukemia