Add waterfall chart to library

Hi everyone, I'm wondering if you have considered or is anyone building a waterfall chart for the library. I need it for my project and before starting to build it I prefer to ask if anyone has any progress?

The graph is similar to that of Powerbi https://learn.microsoft.com/en-us/power-bi/visuals/power-bi-visualization-waterfall-charts?tabs=powerbi-desktop

The graph is similar to the stacked bar but drawing only the difference in values, as can be seen in this Excel example
https://www.ablebits.com/office-addins-blog/waterfall-chart-in-excel/

I was thinking of taking barchart as a base and building from there or I don't know if anyone has a better idea


PD: Why is the simple use of a bar chart so complex? The examples are very extensive and the documentation does not indicate a minimum example. Are there 300 lines of code just to show a chart? I think it would be good to simplify it to make it more usable.

Start by reviewing the existing bar chart implementation and its examples, which the issue suggests as a possible base. Compare the expected waterfall behavior with the linked Power BI and Excel references, and clarify the API, supported data behavior, and minimal example before implementation. Done means the library provides a working waterfall chart with usable documentation.

Written by the indexing model from the issue text.