All are elevators of mandible except -
Depressors of mandible are :-


Muscle of mastication : Lateral pterygoid (major depressor).
Suprahyoid muscles : Digastric, mylohyoid, geniohyoid.


Elevators of mandible are :-


Muscles of mastication : Masseter, temporalis, medial pterygoid.
Temporalis
Medial pterygoid
Masseter
Digastric