I like to start by mentioning that the Squat is not really a "Push" exercise. Sure, you push with your legs, but it's basically the same movement as the Deadlift which is considered a "Pull" exercise. Either way, I would consider them quad dominant (squat) or hip dominant (deadlift) exercises.
A nice balance would be a Quad Dominant, Hip Dominant, Upper Body Push, and Upper Body Pull. Very similar to what you posted in your original post.
Wendler mentions in his books that you can apply the 5/3/1 protocol to other lifts, so I don't see why you couldn't use it for Rows or Pull-ups. However, it's nice having the balance of both the Bench and the Press as a focus in routines. Other "Pull" exercises can be used after the main lifts with a 5s Progression or many of his other schemes.
If you want to make one "Push" and one "Pull" the main lifts, then I like Defranco's usage of the Bench and the Pull-up as "Benchmark" lifts.