In addition to the Global Flourishing Study, there are groups in the United States that are including Flourishing questions. For instance, the Association of Religion Data Archives just added a survey that was administered by the Springtide Research Institute that polled young people aged 13-25 years old.
That’s an incredibly valuable piece of data because it’s methodologically very difficult to ask questions of respondents who are under the age of 18. This means we can really trace human flourishing from kids who are in middle school all the way through to adults in their mid-twenties.