Whom do you consider as the greatest Religous Guru india had
1. Adi Shankaracharya
2. Chandrasekhara Saraswathi. (called as paramachariyar)
3. Ramakrishna Paramahansa
4. Shirdi Saibaba
5. Sathya Saibab
6 any others
Shankara, Madhwa and Ramanujacharyas gave a shape to the Indian Philosophy and made it easy to understand by common ppl.
Apart from that, Paramashamsa, Vivekananda and Shirdi Baba are gr8 spiritual leaders.
All these ppl. stand above, any religion or caste.