I just installed Explorer Patcher (available on GitHub. If you install this, it will allow you to change and use any custom icon for your start menu WITH THE ICON CENTERED! It also allows you to change the Windows 11 Start Menu to open on all apps, as well as a slew of other things. Highly recommended. I have also learned that you can successfully use Explorer Patcher, Start 11, and Taskbar X together. It also solves the problem Atomic Alarm Clock not being usable with the Windows 11 taskbar, and makes all the skins for Atomic Alarm Clock available and usable.