Based on your inputs on what private information should be protected under privacy law, we have grouped it in 4 categories.

Category A - Iris/Retina Scan, Finger Print Scan, DNA
Category B - Aadhaar, PAN card, Passport, Voted ID, Date of Birth
Category C - Bank Account details, Debit/Credit card details, Income Tax paid details, Medical Records
Category D - Credit Ratings, Salary details, Performance at Work, Mobile Phone details, Residential Address information, Family details

The more the attributes, the harder they are to protect. What categories according to you MUST be identified as private information?