I use the open source KISS launcher for years now. Your data never leaves your device, and you can expect to save battery life
and speed up your device compared to complex and bloated launchers. KISS is just 250 KB and never connects to the Internet.
The best thing is that - behind a simplistic configuration menu - you can configure it from an ultra minimalist black screen with one text box to call when you need to launch an app, search for a contact, search on internet... to a full app drawer organized however you want (alphabetical order, your own defined categories...). It's just insane and unfortunately so much overlooked.
I was recommended Niagara launcher on here a few months back.
After 2 days I paid for a year.
Just excellent.
Clean and snappy. Take a bit of getting used to but that was well worth the time.
If it look at the data safety section for Niagara launcher on Google Play store, it is also collecting and sharing data with 3rd parties. The cross section is a bit smaller than Nova's but it was still enough for me to nope out of there.
Second vote for Niagara. Admittedly I haven't tried other third party launchers.
[Pixel 7 Pro owner who balked at the standard Pixel screen on sight in a way that I hadn't previously with any phone]
Unfortunately my launcher is one piece of closed source software that I just can't break away from. I've tried plenty open source alternatives and always switched back.
I like it too, even though it didn't notify me when the trial was up like it said it would. I was planning on buying the lifetime (or uninstalling) but it autobilled me for a year instead.
Olauncher is highly rated and collects/shares 0 data (at least according to the data safety section on its Google Play page, though I have no idea how reliable that is).
I installed it yesterday. I'm not hating it but not sure if I like it. It's very minimal. Like you don't even see the notification bar from the home screen and are limited to putting 8 apps on there (after you adjust the setting from 4). Everything else is on an alphabetical list, which has forced me to remember the names of apps instead of just remembering the icon and position I gave it in Nova. But it might just be something I need to get used to, so I'll give it some more time.
Even though I paid for Nova years ago, I went back and downloaded a modded version of 7.0.58, the last version before they were bought out and the code was changed.
I really wanted to like Lawnchair but I always end up back with Nova. It does exactly what I want it to.
Lawnchair and Neo Launcher are close seconds but, unfortunately, there is no one for one alternative. Just use a firewall to block Nova's internet access.