This article at Elle attempts to rank zinc oxide based sunscreens: We Tried Over 30 Zinc Sunscreens—These Are The Best Ones
The Environmental Working Group (EWG) is a non-profit, non-partisan organization dedicated to protecting human health and the environment.
Check out their report on sunscreens: https://www.ewg.org/sunscreen/report/8-little-known-facts-about-sunscreens/
FDA is considering a new rule for sunscreens: Sunscreen Drug Products for Over-the-Counter Human Use , recognizing only two ingredients as safe and effective – zinc oxide and titanium dioxide, and warning against PABA and trolamine salicylate as no longer safe.
More information at FDA website: https://www.fda.gov/NewsEvents/Newsroom/PressAnnouncements/ucm631736.htm