This is a reconstructed org chart of the Papal offices from the 1300s. It describes all the key officers and their respective organizations for a staff of 500+ people.
I smiled as I saw this because I’ve read books predicting the death of the org chart as a management tool.
But, given the Lindy effect – the longer something survives, the longer it’s life expectancy is likely to be, it looks likely the org chart will outlast said books and predictions.