Hmmm,
Well you might want to go over to wikipedia and correct the articles: https://en.wikipedia.org/wiki/Jupiter https://en.wikipedia.org/wiki/Planetary_core
Like I said, I am not a I'm not a physicist or astrophysicist, I am just a software engineer. But in 2017 when I attempted to model the interior of gas giants... my model predicted a core surrounded by high density regions. The model resembled a close-packed lattice.
https://en.wikipedia.org/wiki/Close-packing_of_equal_spheres
I was just playing around with math so I am probably wrong.
Best Wishes, -David Delaune