One of the most important things that differentiates Android from IOS,is the ability to change as much as you want,whether its appearance, performance or whatever.
One of these special abilities is to change the launcher as you know which means changing most of the device's UI (User Interface)
And whether you know it or not,your launcher could change much as an overall,because its dedicated for the home of your device,the place which you visit the most.
So,from my humble opinion,one of the best launchers you could be using today is Smart Launcher
It divides your apps into 5 Tabs:Which makes reaching a certain app easier,because if you want to reach whatsapp then its found in the "Social" Tab,if you want to open youtube then its in the "Media" Tab and so on.
Without making this article long,if you were searching for a launcher,go ahead and try out this one,I'm pretty sure you'll like it.