We cut ash first, red oak second, red or whight oak, third hickory fourth, hard maple next, osage orange next (hedge), hard maple; then you are getting down to the scrub stuff (walnut tops, softer hardwood etc.) There is also sweet gum, and elm if it not too rotten.
You see it varies as to where you are located. There are very few softwood species cut around here for firewood,
The Firewood cutters mostly follow the hardwood loggers around and get the tops and limbs.
PS: MLB needs a lot of this strait grain ash that is being wasted; There are far too many broken bats. Every time I see a bat brake, particularly one that is painted black; I think of how more perfect bat could be made. I would never buy a painted bat; I would want to see how the grain run.