Pixel Experience - PixelExperience is an AOSP based ROM, with Google apps included and all Pixel goodies (launcher, wallpapers, icons, fonts, bootanimation).
LineageOS - Operating system for smartphones and tablet computers, based on the Android
crDroid - crDroid is designed to improve the performance, reliability and customizability of stock Android.
CopperheadOS - Secure Android built for encrypted and secure phones by a privacy focused company. Available as security-centric and privacy focused Google-free Android for the latest devices. Fully integrated with the latest IDS and MDM enterprise technologies.
Android - Android is an open source mobile operating system initially released by Google in 2008 and has since become of the most widely used operating systems on any platform.
Evolution X - #KeepEvolving!