The economist who was associated with the WTO draft document is

Jagdish Natwarlal Bhagwati is a world renowned economist known for his extensive research on international trade and free trade advocacy. He was a crucial advisor to the Director General of the General Agreement on Tariffs and Trade GATT, which was the predecessor to the World Trade Organization WTO. His intellectual contributions and expertise in trade policy were instrumental in shaping the conceptual framework and the draft documents that eventually led to the establishment of the WTO. While the other economists listed are also highly distinguished in their fields, Bhagwati is the one most directly associated with the institutional and legal development of the WTO framework.