I notice that the categories are "Northern America" (containing US and Canada), and "South America" (containing Mexico). I would prefer to see Mexico in the "Northern America" group, renamed to "North America".

If it is intentional that it is grouped with other developing nations further south, we should change the other category to "Southern America", which although awkward, is at least not factually incorrect.

Even if Mexico moves, Central American countries are generally considered to be geographically (if not geopolitically) more a part of North America than South. So "South America should still probably change names, unless all the Central American countries get shifted into "North America".

Apologies if this chart is following existing WMF decisions/policies/guidelines, etc. that I'm not aware of.