Nice. These are one of those things that are funny to play with in Blender.

I thought this was going to be a Geometry Node tuts, but this is just as great Thanks

Amazing Thank you !

Just great! I have an issue though. When working on complicated models (human body, actually) the proximity is an hindrance because it will select (influence) areas that aren't all on the same part (one leg, the other for instance). Also I want to deform the selected areas with mathematical equations. So I did something similar in effect but widely different (it is a geonode). It is extremely complex but does the job. Would you like to get my blend file and do something much simpler? I'll give you the link to the file but I tell you inside is ugly. We probably will need to talk to recreate it properly.