A team spokesperson says both defensive end Will Coleman and offensive lineman Ronald Cochran have enrolled at MSU.
Jamoral Graham enrolled earlier this month.
Coleman was a two-year letterwinner at Tyler Junior College in Texas. Cochran played at Olive Branch last season.
There are only four Bulldog signees yet to enroll at school, linebacker Deshon Cooper, offensive lineman Jordan Harris, cornerback Lashard Durr and tight end Ravian Pierce.