If you simplify data in charts, beware of enforcing biases. People may not interpret the thing you think.
Research shows how popular chart choices can trigger unconscious social biases and reinforce systemic racism.
This should be a compulsory read for anyone working with data visualization in some capacity:
https://nightingaledvs.com/unfair-comparisons-how-visualizing-social-inequality-can-make-it-worse/