Question

Who were the Bhagawatas and Shaivas?

Answer 1

Shaiva tradition is probably the oldest among Hindu sects. In Shaiva sect Lord Shiva is the main deity, he is considered as the form of the supreme being. Ishwara which is another name for Shiva is used in the ancient scriptures to mean the absolute god.

The sub-sects within the Shaiva tradition worship different forms of Shiva and attribute different qualities to Shiva.

sorry I don't know about bhagwatas