How do I organize app icons in Launchpad alphabetically?

I guess the iMac isn't versatile enough to permit that.

I use the dock and/or the Applications folder; after all, I am using a computer, not a "tap this pic/icon" device with a simplified version of the OS.

FWIW, apps in your Applications folder are in alphabetical order.

Only by manually dragging them into alphabetical order.

Apparently Apple didn't see the need. Personally I never use Launchpad.