I must say couple of interisting indicators here. I myself also use the help of Chat GPT for creating indicators and ideas as well. Another good tools are Perplexity AI and Yeschat. ChatGPT paid version is getting better each day as well. but it seem YESchat delivers more accurate work for now.
Aynway, there was this indicator that caught my intention posted by John. It looks interisting and I have rebuilt my version with informations that were available it looks simmilar, but maybe Author can share more how the calculations are made for the bands and for the two main lines.
Although the original indicator has missing bar issues and refreshing issues. Even if you use reffeshing indicator it is always shifted one bar back to bar -1. See the picture below for comparison.

MQL4 code is also below for whoever wants to play with it. Maybe John can tell us more about the original code calculations, so I can try to adjust it, so the lines behave like original or maybe posting mql4 code here. Anyway looking forward to hear more.