What do each of these thematic maps have in common? They are all mapping the exact same data. What makes them so different? They are using different classification methods. One of the first things that pops up when whipping up a thematic data visualization that has discrete range brakes (commonly a choropleth map, but not necessarily) is how do I bucketize my data for color assignment?
How to build an interactive choropleth map with barely any code - Storybench