I tested this again today. Here you can see on my system that just changing the altitude of a cloud layer greatly changes its appearance. Its odd that your system is different but considering how the new MSFS does totally different things for different people, it doesn’t really surprise me. I’ve always considered the presets to be just a guessing game but you are correct now that density controls how dark a cloud shadow gets. Thats helpful. anyway…pics to illustrate what I mean:
