According to the University of Virgina, most types of leukocytes are phagocytic, including neutrophils, eosinophils, basophils and monocytes. Neutrophils are also usually the most plentiful of leukocytes, accounting for anywhere between 40 percent and 75 percent of white blood cells in the body.
The University of Virginia states that phagocytosis is a major tool of destroying pathogens in the body, but the phagocytic leukocyctes do not work in isolation. They are aided by the lymphocytes, which are b-cells and t-cells. These cells, which compose between 20 percent and 45 percent of leukocytes, are capable of marking pathogens so that the phagocytic leukocytes can know what to envelop and destroy.