Not exact matches
A custom ROM is generally based on some
stock version put out by the manufacturer, which has been modified by a developer (s) to provide a
totally different level of control to the end user.
There's also the Android One
version, which offers a
totally stock experience and the promise of fast updates — most recently, it received Android 8.0 Oreo an entire month before the standard model.
Android KitKat at its latest
version (v4.4.2) with the
stock Android flavor in the device, the interface looks
totally neat and easiest to use and navigate.