Dedoimedo published a tutorial about using Open-Shell as a replacement for the Windows 11 menu.

How to use a classic menu in Windows 11 with Open-Shell

Guide showing how to use Open-Shell as a replacement for the standard Windows 11 menu, covering installation, transparent menu icon tweak, taskbar color and opacity, menu DPI and font smoothing, some other customizations, and more

How to use a classic menu in Windows 11 with Open-Shell