How do I display the last person that edited content instead of the original author?
Adding a relationship of user (content revision) &amp; Content (Content revision) proved to be fruitless.

Ok, time for plan B

Using Views field view we'll create a revision view, add revision user as field and then insert this view as field on the content view. 

1) Create a new view 


Show: Content Revision
Checkmark Create a block
Items per block: 1




2) Add a contextual filter 


Originally I tried with Revision ID, but there is a bug, this contextual filter does not work. 
So instead use ID (which is the node id)





When filter not available, hide view




3) 


Remove the changed &amp; title fields
Add Revision User




4) Add a Sort of Changed




Select Descending sort




5) Save your view



Now go to the Content View (/admin/structure/views/view/content)

1) Add field of ID




Checkmark, exclude from display




2) Add field View




Select the view you just created and for contextual filter use {{ fields.nid }}




and that's it!