A few examples among many similar studies:
https://neobiota.pensoft.net/article_preview.php?id=118480
https://www.washington.edu/news/2002/04/18/wildflower-seed-m...
https://www.dtnpf.com/agriculture/web/ag/crops/article/2016/...
https://wssa.net/2017/08/make-sure-your-seed-mix-is-tested-f...
https://pmc.ncbi.nlm.nih.gov/articles/PMC8176916/
"See what sticks" is inherently biased toward fast spreaders that will outcompete and outspread other plants regardless of their ecosystem services. Even if they're natives.
But like the parent comment, I can't tell you that your own enjoyment isn't warranted in your own garden. The whole point of Indigene is to try and contribute to tilting the balance a bit more into being more aware and focused on the ecosystem benefits of what you plant or don't plant.