Does it not depend on what the data shows that you are trying to highlight? For example, the point of plotting the point estimates on a map is usually to show the contrast between different parts of the map. If the uncertainty tends to be the same across different parts of the map, does it need to be visualized? The point of visualization is messaging, so identify the message and then build the visualization to convey that message.
That said, I like some of the ideas on this page: https://wustl.pressbooks.pub/digitalcartography/chapter/the-visualization-of-uncertainty/The Visualization of Uncertainty.