Other officials can be removed from offices but not by impeachment: those under the executive department may be dismissed by the president; members of Congress can be expelled by two-thirds vote of the chamber the member is a part of; local elected officials can be removed from office through recall.
In the 1935 and 1973 constitutions, the President, the Vice President, the Justices of the Supreme Court, and the Auditor General were the impeachable officials.