in the traditional pedalism system used by everyone on earth, these would appropriately be named "monopedal" and "no legged"
however, under my pedality system, what determines the pedality of a creature is based upon the parts of it which can drive motion/force (the motors) and retain the current context (the anchors)
the left example would be bimotile tristable. the arms (not the crutches) work together and in unison to complete a single force, so they are a single motor, however cannot stabilize alone, making them two distinct anchors. the leg is its own motor and anchor. together, this gives them two motors and three anchors. a good comparison would be assuming the crutches are actually raised platforms. for the creature to truly be a monoped (monomotile monostable), they would need to rely on their leg alone without crutches
the right example would be considered antimotile monostable, as there are no motors, but there is an anchor (the base of the body). however, this is only in the context of them being upright. lying on the floor, they can squirm around and such and move their body that way, allowing them to be completely monopedal as the body acts as both a motor and an anchor