While it is subjective to determine the precise ranking and influence of economists shaping global policy, here are ten influential economists who have had a significant impact on global policy discussions in recent times:

1. Janet Yellen: As the current Secretary of the U.S. Treasury and former Chair of the Federal Reserve, Yellen’s expertise in monetary policy and economic research has shaped global economic decisions.

2. Jerome Powell: As the current Chair of the Federal Reserve, Powell’s policy decisions and communication have a profound impact on global financial markets and economic stability.

3. Christine Lagarde: The President of the European Central Bank and former Managing Director of the International Monetary Fund, Lagarde has played a vital role in shaping economic policies of the Eurozone and global financial institutions.

4. Joseph Stiglitz: A Nobel laureate and prominent economist, Stiglitz’s work on income inequality, development, and globalization has influenced the policy debates worldwide.

5. Olivier Blanchard: As the former Chief Economist at the International Monetary Fund, Blanchard’s research on macroeconomics and fiscal policy continues to shape economic policies of countries globally.

6. Carmen Reinhart: An influential economist and now the Vice President and Chief Economist of the World Bank, Reinhart’s expertise in international finance and debt have informed policy decisions globally.

7. Esther Duflo: A Nobel laureate and development economist, Duflo has contributed significantly to evidence-based policy design and poverty alleviation efforts, influencing global discussions on development economics.

8. Lawrence Summers: A former U.S. Treasury Secretary and leading economist, Summers has held influential roles in shaping economic policies globally, particularly on issues like financial reform and international trade.

9. Raghuram Rajan: The former Governor of the Reserve Bank of India and an eminent economist, Rajan’s research on financial markets, monetary policy, and banking systems has influenced global policy debates.

10. Kenneth Rogoff: A prominent economist and Harvard professor, Rogoff’s work on monetary economics, exchange rates, and financial crises has had an impact on shaping policies worldwide.

Please note that this list is not exhaustive, and there are numerous other economists who significantly contribute to global policy discussions. The influence and importance of economists can also change over time based on the prevailing economic circumstances and political landscape.