How do we sort sales orders by need to backorder

How do we sort sales orders by need to backorder

We cannot figure out how to define a view, or which of the existing views allow for a view of the confirmed sales orders that need backorder.

----A clear way for purchasing team to see what needs to be backorder any time of the day.
----A clear way for sales team to see what is actually ready that day and is ready to be packed, shipped, invoiced.

The "sales orders for packing" view would make sense if it did not show sales orders that are not in stock also, as if something is not in stock it cant be ready for packing.  

Seems like a simple solution would be if the need to backorder someway relayed an icon on the list page, but it does not.