It might be interesting to let actual verified employees by having a company email, anonymously give feedback on whether or not the company lives up to its values
I tend to work with many (and for small startups, all) of the current engineers on the team to write their profile. I also encourage companies to incorporate honest statements from their team members and provide links to their Github / LinkedIn / Twitter so that people can contact them if they want to reach out.
I never found Glassdoor super helpful during my searches, so I didn’t go that route.