Simplex / Perlin noise to generate flowing geometry

I have recently been captivated by this type of geometry (Seen in attached picture, and youtube link here: flowing bench link)  And have been trying to replicate something similar.

As far as I understand, They use perlin and simplex noise in order to generate the distortions - but I have been having an incredibly hard time getting the same results.  The best I have been able to achieve are blobs/clumps that don't respond very well to any input that I have tried.

I was hoping there might be someone who has been able to figure out something like this, and how they went about doing it - with OR without the use of the 4D noise/simplex/perlin noise plugin (found on food4rhino).  Is there anyone who can help me with this?

Thank you in advance!!