Nested virtualization also works great on ESXi for macOS guests ( so you can run docker desktop if so inclined ). I believe this is possible with proxmox as well with CPU=host but have not tried it.

For graphics, another cool thing is intel iGPU pci passthrough - I have had success with this when running esxi on my 2018 mac mini https://williamlam.com/2020/06/passthrough-of-integrated-gpu...