Rarest legendary items?

Can someone post some of the high end and rare legend items so that I stop deleting them when I find them?

No need for that. Just look at the codex.

It’s rare if it has “Location Unknown” on them.

For me one of the rarest is your first nadroji piece. It Gets easier when you farm with it.
The Defiant set is rare for me as well. Mutiny and Insolence.

Items that has affixes that cannot be availed via crystal as well.
Like Legend affixes with weapon damage, element damage, stun immune.

But really it depends on your build as the importance for you factors in.