Janitorial, technical, nutritional … basically anyone not involved in educating students “non-faculty.”

So including people performing a big chunk of essential research tasks and who do not fall into the "professor" or "student" category.

Didn't those already exist before? Is there lot more of that type of work? Or shouldn't it be done more efficiently now? Also aren't those increasingly out-sourced so shouldn't count in that stat?

I would assume non-student TAs (who do teach students), lab technical staff (who maintain equipment and and more directly enable teaching than janitorial staff) and such are also all non-staff.

Non-student TAs are typically grad students whose research lab lacks research assistant funding.

Universities try to hire grad students as TAs to help them out, but sometimes hire outsiders as TAs. It could be because the undergrad major has lots of students but the corresponding graduate major has few.

Obviously this varies from university to university and I know nothing about Cornell.

>I would assume non-student TAs (who do teach students), lab technical staff (who maintain equipment and and more directly enable teaching than janitorial staff) and such are also all non-staff.

They are considered staff.

Sorry. I did mean they are staff, and that they are "necessary" staff for the core function of teaching.