Who were the true builders of Chartres Cathedral?

The five year restoration and reopening of Notre Dame de Paris on December 8, 2024 reminds one that magnificent edifices such as cathedrals are ultimately the combined passionate work of competent men and women of all trades, crafts and professions. As was the case with Notre Dame de Chartres cathedral in the 12th century.

"These poor Norman workmen departed on a new crusade, as it were, of chisel and trowel to offer their labour for the adornment of Our Lady’s Church." We know very little of the true builders of Chartres Cathedral. Who were they and how were they organized? A glimpse.