I made GridCraft, an action menu for Hammerspoon based on StarCraft II Grid Hotkeys.
The idea is that instead of trying to use mnemonic hot keys
like F for Finder and X for Firefox and C for Fantastical and M for Find My,
you can instead lay out the applications spatially and remember them by their place.
It has all Phosphor icons built in and ready to use, and it supports launching macOS applications/files/folders, running any Lua code you want, and nested submenus.
The key grids are totally custom, so you can use special keyboard layouts, and be as maximalist or minimalist as you want.