Non-traditional students with interesting stories and essays could attract favorable attention from admission readers.
Where your HS GPA stands does depend on what variant it is. https://rogerhub.com/gpa-calculator-uc/ calculates the three kinds of HS GPA used for UC admissions (most UC pages use weighted-capped if not otherwise stated). http://talk.collegeconfidential.com/university-california-general/2174563-2019-uc-freshman-admit-rates-updated.html shows historical 2019 frosh admit rates by HS GPA