This should all be pretty much public info for American. Exec pay should be easily googleable as well as average pilot pay and number of pilots, similar info should be available for other work groups. Whether you think they are overpaid is a separate matter but corporate salaries don’t make up a significant enough portion of salaries to warrant breaking it out here.

The corporate side of it would barely be worth showing on this chart. Major airlines have a heavily unionized workforce with over 100k employees. The highest paid employees by far, other than the most senior execs, are pilots. Pilots, especially mainline pilots, get paid very well and have extremely strong unions. I’d say about half of the total salary line goes to pilots. Then the rest will be spread between flight attendants, mechanics, ground crew etc. a small portion will be corporate but it is definitely not the industry to be in if you are looking for large corporate salaries, and given the size of corporate employees compared to the entire org it is a small fraction of the total payroll of the business.