After Working on it alone for a year, the founder and original developer of Nova Launcher Kevin Barry has stopped working on Nova Launcher and the open sourcing efforts. More Info: https://teslacoilapps.com/nova/solong.html
Padding and grid / snap to half-grid makes it so easy to get things lined up exactly how you like.
I also like having slide actions on the dock... I have a phone icon. If you tap on it, it opens a folder with my most common 9'ish contacts as direct dials. If I slide up on it, it opens the phone app. Repeat for other icons on the dock and you get over a dozen potential actions from 4 icons.
Not sure if anything else offers this.