As suggested in the comments by Davide, I am sharing in the following link:
https://drive.google.com/file/d/1GrPm1dc2DZ_7lce-trU7HPYMnNLcewsZ/view?usp=drive_link
the anonymized .pbix I am working on.

This is what gets displayed by the force-transform diagram by default

What I would like to have is something like this:

I currently obtain this by pulling manually node 54 on the far right and the graph adapts accordingly. However, I am looking for a smart way to have this initialized automatically, pushing nodes with the highest value in the field "group" on the right, and nodes with the lowest value in the same field on the left. One clarification is that my dashboards has filters on the top page, which are passed on to the diagram. Hence this initial arrangement of the nodes shall be done dynamically, as a function of the field group, and cannot be predetermined.