This is a very interesting breakdown of the types of professional editing, but with respect, I think it's too exhaustive for the kind of unpaid, often short-turnaround work a Yuletide beta does. The difference between a structural edit and an editorial assessment is meaningful when you are determining which one to pay someone to do for a book manuscript, but less so when your fic is due in a week and you need someone to assess its readiness.

I'd have to defer to OP on the practicality of having the spreadsheet maintainer define the edit types.