I have been looking as well and didn’t find a lot, but here at least some info from Dave2D, putting it at about a RTX 4060: https://www.youtube.com/watch?v=Zy5MWFrb0Y8&t=3s
However, unfortunately graphs in the video from Dave2D are not optimal, as they mention for example “1080p Ultra” for Far Cry 6, while we all know that Far Cry 6 would, if HD package is installed, send an error message to the brand new Framework 16 that VRAM is missing - so FPS numbers are a bit misleading if you want really good graphics ;).
Some general arguments for more VRAM: should be more sustainable as you can simply use GPUs with more VRAM longer, they are competitive for a longer time, even in a second life as a Framework EGPU. In addition, of course there is productivity - I heard Framework 16 is aiming to be a creator laptop as well. Not with 8gb of VRam - sorry.