Thank you for sharing this. I was looking specifically for EPS geofoam (like - https://geofoamintl.com/most-frequently-asked-questions-about-eps-geofoam/) vs Light weight cellular concrete (like -https://www.cell-crete.com/divisions/lightweight-cellular-concrete/?gclid=CjwKCAjw0dKXBhBPEiwA2bmObasUvFQgGaixoYK-PPCjgCW7UGWp2N9s061oLyiDC_6P2xmq5Ko6bBoCWwIQAvD_BwE). I was able to locate that EPS insulation has lesser embodied footprint than light weight concrete ([Material Pyramid - https://materialepyramiden.dk/).
I could not find any direct comparison between these two materials.