Well, those are just skillsets that could allow you to earn profit your organization.
Could vary a lot between which job you are applying.

Could be anything from sales/marketing related skillset for the presales, networking/cloud for those doing data-center, programming languages/application of technology for developers to electrical, coolant related skillset for the repair technicians.

The thing about ST is that, when you are applying for a job.
E.g software engineer -> They are looking on your University and how well you fare in grades instead looking at skillsets that could help generate revenue (i.e programming/SDLC/networking/system architecture skillset in this case).

So ended up you might have a Local U FCL in Aerospace with minimum programming background being offered with high 4k range and another one from private U with exposure to different programming language / having some useful technical certs being offered with high 3k - low 4k salary for fresh grad.