This demo explains how to create a tornado chart in Xamarin.Forms by using the existing chart types in Syncfusion Xamarin.Forms Charts.
The tornado chart is a special type of bar chart. In tornado chart, the bars can be extended from the defined baseline and which is also used to compare data among different types of data or categories, the bars in the tornado chart are horizontal and this chart is basically used to show the impact such as how a condition will impact the result on the outcome.
You can achieve the tornado chart using the bar charts. For more information, please refer this article
What are the different types of axis in Xamarin.Forms Charts
How to add multiple series in Xamarin.Forms Chart
How to show the provided information of the data points to user