Sankey chart visualization

I would like to create a “sankey chart” visualization similar in design and quality as the following two examples: The purpose of the visualization will be to show how the “Aggregate Economic Index” is calculated. More about the Aggregate Economic Index can be read about here: Specifically, I would like to show the percentage contribution of each of the ten data series that contribute to the calculation of the Aggregate Economic Index. The total of all the percentages will add up to 100%, and each of the ten data series will contribute a fraction of this amount to the total. I have created an example layout of what the final visualization can look like. Please refer to the example in the following link to see how I have positioned the overall layout. I think...