Upset training
It wasn't in the course at MAPD when I was there. I thought those students should have had at least some spin training. After all, we had 20-hour students practicing solo stalls in Bonanzas. These students were hired into the regional at 300 hours with none of this training. By now, I'm sure many of them have made it to the majors. I'm sure few, if any, sought the training after they were hired.
We had spins and unusual attitude training at FSI when I was there ten years ago, in Decathlons and Aerobat 152s. Now, they're using Zlins.
I thought unusual attitudes was great training for all pilots. The long and short of it, though, is the majors probably don't care; they're more concerned with your instrument flying abilities.