I’ve recently begun sharing two “cool infographics about language” each week, starting with ones from Visual Capitalist.
You might also be interested in The Best Infographics About Teaching & Learning English As A Second (or Third!) Language.
Here are two more:
You can learn more about this first infographic at The 100 Most Spoken Languages Around the World (you can see a much larger version there):
You can learn more about this next infographic at Mapping the Spread of Words Along Trade Routes: