Agreed. I've been using it for years now, and it just feels like what a launcher should be. I'm surprised it's not been adopted as the default, or even an available mode, since it's so intuitive.
Niagara Launcher is great. I used to use Nova, but found myself only using one home screen page and only like one widget. Niagara does take some getting used to, but I also suggest giving it a try.
I can echo this. I used Nova for close to a decade, and everybody talked about Niagara so I tried it a couple of times but it didn't stick. I guess it took three tries for me, because I realized that the one-handed navigation for any app, the ability to easily find things alphabetically, and the fact that I could have my home screen apps pinned to the top of the list all make it way cleaner