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There has also been a commercial offering in this space for a while: FF Chartwell (https://typographica.org/typeface-reviews/chartwell/)

Very cool, but …

I don’t understand how the ligature knows to generate a Vertical Bar vs Bar vs Pie Chart since there no identifier to specific which to use.

There are different font files for each graph type.

If I'm understanding the article right, they're actually different fonts as opposed to a single font.