Honestly the amount of effort to try to reverse engineer all this is much more than just using a solid test routine.
A material test for cutting will take only a couple minutes, and engraving is so complex and subjective that in my eyes there’s no such thing as a “right” setting.
I just posted a proper write up of how I test. Might be worth trying if you haven’t?
Don’t know what settings to use on a material? The only way to be sure is to test. Good news! You can effectively test on a thin strip on the edge of your material, it’s fast and easy.
I use this shape to do so (SVG attached):
Click here to download/save
Set the first operation to score (the numbers). You’ll use these to identify your cut pieces later.
Set each of the curve shapes to a power/speed combo that you want to test. I usually set a constant power a…
I think you’ll find that materials vary so much that it’s just faster and easier to test them as you go.