I am a stickler for launchers. I love the general stock Android feel, but also love those old school iPhone jailbreak levels of customization where it makes no fucking sense but you have the option to do it anyways just cause. The best launcher I ever found for my tastes was Evie. Extremely simple with no ads, bordering on the stock Android experience, with great quality of life features such as assignable gestures, adjustable icon size, icon packs, and notification count on apps you can turn on if you'd like. Unfortunately, the launcher stopped receiving updates in 2011. Some functionality is starting to be lost, like news and weather integration on the left of the home screen. I'm rocking a OnePlus 6t if that matters to anybody. What launchers are good now?
Lawnchair is a very stock launcher that is open source. The playstore version is out of date so it is reccomnded to use the f-droid version. But it is very much akin to the "pixel launcher" so it may not have all the features you are looking for. Nova is always an option but it's not open source
I've been using Lawnchair for a few years with no complaints. It's basically the pixel launcher with extra features.