GrapheneOS vs LineageOS vs iodéOS

According to Comparison of Android-based Operating Systems, GrapheneOS seems to be better than LineageOS and iodéOS in every aspect.

I’m wondering if there is any downside of GrapheneOS. What am I giving up for using GrapheneOS instead of LineageOS and iodéOS (besides GrapheneOS only support pixel)?

In terms of privacy, security, customizability and functionality, which OS would you recommend and on what device would you recommend using it?

Some questions

• Does LineageOS supports muti profile like GrapheneOS (I thought all AOSP supports multiprofile feature)
• Can LineageOS supports Sandboxed Google Play with some tweaks?
• Does LineageOS supports full device encryption using some open source app? (like veracrypt on windows)
• If there is backdoor planted in pixel (which in my opinion is very likely), then I guess the “risk of an adversary gaining physical access to the phone” is quite equal for both of OS?

thanks a million