ArrowOS lg g8 is an AOSP based project started with the aim of keeping things simple, clean and neat. We added just the right and mostly used stuff that will be actually USEFUL at the end of the day, aiming to deliver smooth performance with better battery life.
LineageOS is based on the Android Open Source Project with extra contributions from many people within the Android community. It can be used without any need to have any Google application installed.
Linked below is a package that has come from another Android project that restores the Google parts. LineageOS does still include various hardware-specific code, which is also slowly being open-sourced anyway. LineageOS lg g8