I was wondering if it was at all possible to share the second screen across all virtual desktops instead of it switching along with the first screen to the new virtual desktop. This feature is in ubuntu's gnome-shell and I really enjoyed the feature there.
Yes, but not with built-in Windows 10 virtual desktops. You'll need to download a 3rd party program that's is very well made called Dexpot. Use the feature called "on all workspaces"