These are the starting point for my recommendation for PII data elements for CCC based on the NIST recommended PII data elements (Alex Jackl):
Class 1 Elements: Obfuscated in open reports - except for Date of Birth as noted
Full name (if not common)
Face (photograph)
Home address
Email address
National identification number/
...
SSN Encrypted
Passport number
Vehicle registration plate number
Driver's license number
Fingerprints
Handwriting capture
Credit card numbers
Digital identity
Date of birth (if linked to any other Class 1 element, otherwise allowed)
Birthplace
Genetic information
Telephone number
Login name, screen name, nickname, or handle
First or last name individually, if common
Country, state, postcode or city of residence
Age
Gender
Race (if not linked to class 1 data)
Name of the school they attend or workplace
Grades
Salary
Job position
Criminal record (if not linked to class 1 data)
Web cookie
Class 3: (CCC Elements not covered by NIST)
Sexual
...
Orientation Obfuscated and encrypted