This app was mentioned in 2 comments, with an average of 1.50 upvotes
Lockscreen, which is the stock lock screen with customized SMS shortcut and wallpaper.
Home screen is, again, stock launcher with the Zen Marshmallow theme which replaces both the icons on most of the stock ZenUI apps and the quick settings icons with their stock Google equivalents.
The wallpaper on both the lock screen and home screen are the defaults from the Zen Marshmallow theme.