Identify this visual

You can create something similar using the default fill map. In this case by using a Clustered column chart using the same colours as the map in the conditional formatting for the values

Or if you don't need the actual values, you can just copy the gradient bar from the formatting pane using the Snipping tool and add it as an image:

You can even include the values by adding them as measures (instead of Min and Max) if need be