Key Values' staff is just me, Lynne. (Hi there!) Companies self-select the 8 values that best describe their engineering culture, and then I work closely w/ them to qualify them. All of the content is curated, and it takes a lot of time, care, and thought to put together.
To answer the original question (Who decides whether they meet each of the criteria?), the answer is you, the reader. "Work/life balance" can mean any number of things, and people often forget that there are countless ways to define a given term. The goal is for teams to describe what it means to them and let interested applicants decide whether it resonates w/ them.