Philosopher-founders and head teachers of Vedanta schools.
Adi Shankaracharya tradition — non-dualism.
Ramanujacharya tradition — qualified non-dualism.
Madhvacharya tradition — dualism.
Vallabhacharya tradition — pure non-dualism, Pushtimarg.
Nimbarkacharya tradition — dualistic non-dualism.
Chaitanya Mahaprabhu — inconceivable difference and non-difference.