A "ribbon chart" which is a new way to look at a stacked area/column chart. Looks much prettier and easier to compared to the normal stacked styles that have commonly existed in most chart systems.
This site wrote up an article about the style being added to another chart system.
Jon Eshuijs commented
Completely agree here with Gareth. This Ribbon Chart has a lot to offer. Don't make us use Power BI for this.. We would like to use Highcharts :)
more details of the visuals: https://www.tutorialgateway.org/format-power-bi-ribbon-chart/