Which type of unit is NOT typically found in the Army National Guard?

The type of unit that is not typically found in the Army National Guard is a naval unit. The Army National Guard is primarily focused on land-based military operations and is composed of various types of units, including infantry, armor, and artillery. These units are designed to conduct ground operations and fulfill a range of military missions, from combat to support and logistics.

Naval units, on the other hand, belong to the U.S. Navy and the U.S. Coast Guard which are specifically trained for maritime operations. The structure and mission of naval forces are distinct from those of the Army National Guard, as they operate primarily at sea and are equipped with vessels and aircraft designed for naval warfare. Therefore, a naval unit does not fit within the organizational framework of the Army National Guard, which is land-oriented in its operational focus.