Multiple Myeloma, Chronic Lymphocytic Leukemia (CLL), and Chronic Myeloid Leukemia (CML) are types of bone marrow cancer typically observed in older age groups, generally in individuals aged 60 and above. Acute Myeloid Leukemia (AML) and Acute Lymphoblastic Leukemia (ALL), however, are bone marrow cancers that can occur across a broad age range, from childhood through young adulthood to advanced age.