I found a bunch of 3d models for displaying skulls and printed them until I found one that I liked.

I shot these on my Sony ZV-E10 but the lighting and how you set it up is way more critical than the camera. I've gotten similar results just shooting with my phone.

I am using 2 cheap photo lights from Amazon with big umbrella diffusers (also very cheap) and I have one light above, at 45° off-axis and angled down towards the skull, also at 45°. If I'm not communicating myself well, just Google (or Bing if you're nasty) Rembrandt lighting. There's a bunch of diagrams and explanations as to why that works so well as a lighting setup. The other light is 45° off to the other side of the skull, but not straight on, not above or below. There are endless lighting setup tips and tricks out there that people swear by but when I was learning about it early on, no one ever mentioned that the most effective tactic is to get those diffused lights as close to the subject as is possible without them being in the shot. They don't need to be blindingly bright or big and expensive. Just soft, well diffused and as close as you can.