Hello @tgeddings

I don't know UIFlow, but there are bar graphs in the Arduino IDE.

The LCD has a progressBar command.
progressBar(int x, int y, int w, int h, uint8_t val);


LVGL has many display functions as well as bar graphs.
Light and Versatile Graphics Library:https://lvgl.io/
UIFlow is a port of LVGL, and the addition of functions is always delayed.