Sliders to adjust Y stretch of certain datasets

So I have multiple datasets to be shown on one graph & we want to adjust the importance (OY stretch) of each dataset / certain groups of some
using sliders
Each X would represent some solid entity & we want them all sorted by some, say, linear function of all Ys - using that slider importance data
But we’ll want to see all Ys, not just the function to sort Xs
How do we make that?