Interesting. I hadn’t heard of a One Number Budget before.
I don’t think I have seen something that has all these pieces organized the exact way you lay out but you can likely find a number of pieces that are close if you search in the Show & Tell section(s). You may be able to pull them together into a single view or just use them as standalone functional sheets.
The new Monthly Budget Calendar might be helpful with seeing “how much discretionary spending I have left each month”.