It sounds like you have something that works for you, and that’s great! But I don’t think it’s accurate to pigeonhole this other approach as being “for minimalists.” I’ve used KISS Launcher for a long time and I don’t think of it as especially clean or minimalist. It’s a powerful and flexible way to launch pretty much anything.
I too have built a muscle memory, and mine is tapping a few letters to filter through apps and launch the one I want. The same approach works when finding a contact in KISS. And from the same box I can also launch a web search with my default search engine, or enter a URL to visit directly in my browser. Where things get a little nuts is that this same search filters through apps’ intents as well: hidden shortcuts to launching specific functionality within the app.
All of these searches happen as I type, as quickly as I type, with results weighted by my launch history. And if for whatever reason I want to scroll through a complete drawer of my apps (it happens), that’s one tap away. I’d say KISS manages to be both maximalist and instant.
This approach may require more taps, but less thinking. I never have to start by asking “Am I looking for a tier-1 tap app? Tier-2 swipe app? A drawer app?” Every app (and contact, search, URL or intent) is a few keystrokes away, always the same muscle memory, and that’s my idea of fast.