What are the most important charts, graphs, statistics, or other data visualizations related to effective giving?

I’m looking to write an article that tries to make the case for effective giving in 7 charts.

To do so, I’m currently working to compile a document of the most compelling charts, graphs, statistics, or other data visualizations related to effective giving.

Here is a link to what I have so far. What am I missing?

I’d really appreciate it if you could take a look and then suggest some that I might’ve missed in the comment section below. It would be preferable if you could share the chart, but it would still be great if you could even just describe it (so I can find it/​make it later).

After this, I’ll create a poll so we can vote on the top 7.

Thanks!