Short and dirty: My IT-school got their Windows 7 to be fairly minimalized, which I dig a lot. In particular, their starmenu consisted of nothing more than several subfolders leading to programs (shortcuts of them, rather).
I don't want to completely strip Windows 10's startmenu, I do wonder if something like this was possible though. I've tried googling this idea, but I've only found ways of adding tiles leading to folders - which isn't my intention. I want to be able to open a submenu (let it be folders, even) that allow me to access shortcuts without having to open the folder in the File Explorer.
I use Classicshell for Win 10, 8 and 7. You can customize the menu any way you like with it and ClassicShell is free.
i.e. This ClassicShell is setup on my Windows 2012R2. Although the screenshot is Windows 2012R2, it works, just the same for Windows 7 and newer, including server OSs.