I have been using uPlot graphing framework on ESP32 micro controller. It is fastest and lightest weight graphing framework.
https://github.com/leeoniya/uPlot
I have created simple ultra low power IOT framework to control and monitor whole IOT network of up to 100 esp devices using websockets communication method.
https://github.com/happytm/BatteryNode/tree/master/examples/SimpleGateway
https://github.com/happytm/BatteryNode
Please provide example using your library with uPlot graphs.
Thanks.