Yeah sorry, I’ll try to be clearer. I’ll share a videos as I think that will be easiest.
I realise they are not as similar as I thought, but still have overlap. Down side is that the context filter is in view and not in field settings. Like a lookup would be.
One more thing is how similar this is to a lookup. If I were to add a lookup field from the people to show the emails, I would get the same data as the context filter, but not editable or addable.
Related to Editable Lookup Fields - #12 by Matt_Blais and Add a view of "Collection" entities within another entity that are not related, just for reference - #3 by RonMakesSystems