- Achondroplasia: The most common type, characterized by short stature, disproportionately short limbs, and a large head. - Thanatophoric Dysplasia: A severe form that often leads to perinatal death due to respiratory problems. - Osteogenesis Imperfecta: Known for brittle bones that fracture easily. - Multiple Epiphyseal Dysplasia: Affects the development of the ends of the long bones, leading to joint pain and early arthritis.