Before Launcher

I used this launcher a few years ago when I needed to switch to something barebones through the daytime hours. Before Launcher claims to help you open your phone 40% less than you do now, and I’ll admit there’s something to it.
When you first set up Before Launcher, it’ll ask you to choose your most-used apps so it can bookmark them on the front page. If you need something else, swipe left to the right-most screen, and there’s the app drawer. And if you need to access notifications, you can swipe to the left to reveal filtered notifications so that only the apps you really need to see can send you alerts.
Before Launcher is free to use. If you end up liking what you’re using, you can upgrade to Before Launcher Pro for $6, which gives you extra goodies like the ability to pin apps and create app folders.