Using Arcade to Build Bar Chart from Various Layers

[eccdev]

Is it possible to make a bar chart, but each bar is the count of features of a different layer?

For example: I have 3 layers: Elementary Schools, Middle Schools, High Schools. (Its not my data, so I can't combine them into 1 layer). Then make a bar chart with 3 bars showing the total number of Elementary Schools, Middle Schools, and High Schools respectively.

[KenBuja]

Esri maintains a Github repository of Dashboard samples, one of which shows how to combine multiple data sources into a single chart.