If you want some serious customization (One the power chart isn't great in my opinion) I would recommend @bmusson's chart.js module. It is fantastic to work with. We use it to plot thousands of datapoints and it works seamlessly. You have a good amount of customization and the documentation for how to do things with the charts are everywhere.
Obviously check with your customer and team to make sure non-Inductive and their partner modules are okay to use in their environments.
Musson Industrial’s Embr-Charts Module - 3rd Party Modules - Inductive Automation Forum