Symmetrical wallpapers like 2 and 4 work better as a wallpaper for your background. For the background the goes with the app menu then go with 2 as it is less clunky, symmetrical, and won't be hard to look at when a bright app is on a bright part of screen or something like that. And 4 can be good as the lock screen, more details but it won't interfere with reading app icons.
However that is my opinion and you should really do what you like