I wonder what is generally the best way is to trim excess in the correct way. How do you seperate doers and value add from dead weight. Maybe some kind of 360

I wonder what is generally the best way is to trim excess in the correct way. How do you seperate doers and value add from dead weight. Maybe some kind of 360 review where you try to find out who people go to when there is a problem. I suspect you'd find a small percentage of people that are known for sorting issues and these are the managers you want to keep. For example, a couple months ago a company I consult to had an email get pushed through 5 people in a team that needed something simple to be done. It wasn't my job but when it came via me I did it, was like a 5 min task any one of the previous people could have done. If I was the manager of that team I would ask each person on that thread to explain why they added someone else to the email vs just getting it done as you end up with 6 people on an email chain for no good reason. This kind of behaviour is common in this company and its quite amazing to me. Full of people shuffling work vs doing it.