I want to be able to group app icons on Start menu - Windows 11

Completely agree with this. For me, the way it worked in Windows 10 Start was fine, but more important is the specific function that has been removed: I have several hundred apps, 85 of the ones I use most often, or whose names I can't recall, in 8 groups on my Windows 10 Start Menu (e.g., News, Audio Tools, Graphics tools, Communications, Hardware, etc.). This way, I can quickly find any app by just looking at that group. The apps I use most often have larger icons, the ones I use infrequently have smaller icons, and icons are positioned so those that are related to adjacent to each other, like a mini-brainmap per Group. Perfect visual cue to find what I need in 1-2 seconds.

There is no equivalent in Windows 11. Instead, I can have a tiny number of icons in a grid (no organization), where most are only accessible through All Apps. But if I don't know the name of the app I want to launch, then I can't search for it by typing its name, so I have to browse All Apps and hope I recognize it when I see it. That typically takes me 30-40 seconds to find this way, sometimes longer and I just give up. This means what used to take 1-2 seconds now takes 30-40. Multiply that by a few times a day and Windows 11 is costing me minutes a day, hours a month.

This is BY FAR the single biggest problem I have with Windows 11 -- it cripples me and wastes huge amounts of time.