Lineage OS is a fork of CyanogenMod. CyanogenMod was one of the most popular ROMs for the better part of a decade. They went commercial. The company imploded. Many core devs reformed under Lineage OS.
GrapheneOS and Lineage are very different. GrapheneOS is more privacy focused.
GrapheneOS is also a lot harder for people to wrap their heads around.
I have fond memories of thinking I knew what I was doing and bricking a phone trying to install Cyanogenmod
LineagOS has too many targets.
GrapheneOS + Pixel is best path at present, until a chip + phone is made π
