on the right there’s an example, they are too many to be manually donethisexample.3dm (1.6 MB)
You can use the Unroll command to transform surfaces from any orientation to the XY plane but it won’t arrange the parts just like that automatically.
And as usual, if you want accurate help, post a file with the relevant geometry.
edited the mainpost
From your sample file it looks like you are trying to arrange plates that have thickness (closed polysurfaces).
You can do this with grasshopper and the OpenNest plug-in:
ThisExample_211030a.gh (19.8 KB)