It's legitimately the best launcher I've ever used. It breaks the typical mould of pages of icon grids and replaces it with a vertical list of 8 or so of your most used apps.
It makes my workflows so much faster and I can't go back to the typical Android home screen format.
And if you feel that the pricing for the full version is ridiculous, you can try out the KISS launcher that is similar in not using a home screen, but free and FOSS.
Niagara was an easy 5 stars and lifetime purchase, but I now have a seething hatred for apps that stick random words as a prefix; for example, "myCigna" or "Fly Delta" because it ruins alphabetical sorting. I rate them 1 star for their ridiculous naming practices, but I feel like I need to do something more drastic to communicate my anger.
So i just got a Oneplus Open (the folding phone) and have been test driving launchers to see what works well.
Call me crazy, but Microsofts launcher they made for the Duo is actually really solid. You can adjust the dock to pull out like a mini app drawer while still having a full app drawer (with folder support), and each of those is independent (you have have a dock be like 12 columns wide and 3 rows tall while your homescreens are something more normal like 4x4). Individual icon changes too, which is always a big deal for me. And you can even do things like have the app drawer show the defauot icons while your homescreen is all custom icons.
It even has a universal search bar like nova does, and you can toggle what it searches for (apps, documents, web, all of the above). I was worried it would force me to use microsoft stuff to get the full use out of it, but nope.
Im honestly incredibly impressed. Its almost as featured as the free version of Nova launcher.
You'd be equally impressed to know how much of every single click and tap and app launched and app hovered over Microsoft tracks. Would make Nova tracking selling feel... Benign. They track their operations from the calculator app, FFS.
I like to switch it up to see what's out there pretty often though I've been using Nova since jellybean and before that it was ADW before development stopped for a while. However I like, Neo launcher (foss) for a trimmed down Nova like experience and Shade launcher also foss for a very simple yet pleasing to look at launcher. I find Kvaesito while a cool approach kind of buggy and not very smooth even on my OnePlus 11. Lunar launcher is also cool but not very customizable compared to Nova anyway. Really I just wish someone would bring Helix launcher to modern Android, probably mainly for nostalgia reasons.
I have been using AIO launcher for a few years now. Extremely customizable, fast, information-first launcher. Not for everyone, but if you ever liked Rainmeter, it has the same vibe in a lot of ways.
If you don't mind having to work a bit , you might like Total Launcher, which really lets you customise things. It's a bit of a learning curve, but I like it a lot.
Looking at the examples on the he playstore, I suspect I'm only scratching the surface too.
Total is the only launcher I've ever seen that uses a truly unique paradigm.
All the rest are just variations of a theme, even Square Home (though it's quite different from the pages of grids of apps), and AIO (though its text and minimalist).