Regarding to Microsoft document, you can display custom icons instead of values in list views. But you need
Administrators and customizers can add graphics to a view and establish the logic used to select the graphic based on a column values using JavaScript. The capability to display list views that show icons rather than text or numerical values in some columns was introduced in Relationship Insights.
After your developer coding with JavaScript code, you get the result only on this view.
And with another view, developer should do it again, again and again...
With D365 Icons and Tooltips you (Sales person, Sales manager, Customizers, Administrator, ...) can:
By default, when install D365 Icons and Tooltips, it allows you 30 days trial with full functions.
When your trial expires. You should purchase license to continue use D365 Icons and Tooltips, otherwise please un-install D365 Icons and Tooltips.