Suggested Evaluation Approach

1. Cross-Reference with Older Texts: Examine whether earlier sources from Lahiri Mahasaya’s lineage mention “Nagaraj” or any significant details about Babaji.
2. Compare Lineage Traditions: Different lineages like the Nath tradition do not publicly acknowledge Babaji or the claims of these individuals, suggesting Babaji’s figure may have evolved more within Kriya Yoga circles than across other traditions.
3. Modern Spiritual Claims: Evaluate the impact of commercialization and modern embellishments. Many of these figures, like Govindan, have been criticized for turning spiritual teachings into profit-driven enterprises.
4. Seek Historical Corroboration: Look into other contemporaneous records or traditions to see if anyone outside of the Kriya Yoga tradition mentioned Babaji.

To critically evaluate and refute the claims made in the books and by the authors referenced in the document regarding Mahavatar Babaji, we will analyze their writings and historical authenticity.