that is simply wrong.
GrapheneOS is both in terms of security and privacy the best but currently only supports pixel phones.
LineageOS is trying to support as many devices as possible still with lot of google connections and missing security updates.
>Good news is that if you have a boot passphrase, it's security is somewhat close to GrapheneOS
its not anywhere close https://grapheneos.org/features
This is the correct response. I use both GrapheneOS and LineageOS. But LineageOS focus is on delivering newer versions of Android to many phones abandoned by their OEM. GOS exclusively focuses on security and privacy. If you want a reasonably secure phone but don't want Google or Apple inside your device, your best bet is GOS.
I am overwhelmed by the specificity of your demonstrated knowledge on this topic.