==Lee, Lifeson, and Peart== 
 I have to make a case for Geddy Lee, Alex Lifeson, and Neil Peart as a songwriting team meeting all of the criteria of this article.  If we're including Lennon/McCartney, Henley/Frey. Fagen/Becker, Page/Plant, and Andersson/Ulvaeus, then Lee/Lifeson/Peart belong here.  Not speaking as a Rush fan, specifically (although I am! ) but more from the standpoint of body of work, general reputation, and overall collective musical talent and teamwork.  Strictly considering the quality of their work, they're easily peers of Lennon/McCartney if not the Gershwins or Rodgers/Hart/Hammerstein and deserving of recognition.