Thx MacinMan!Paravirtualization is 3D acceleration for macOS guests, so while you may not want it for third party operating systems, you're still dealing with it. My situation may, or may not be the same as yours though. For me, VMs were a way to deal with macOS dropping 32-bit support in terms of games. So, I would either need to run a windows VM, or Linux and 3D acceleration was necessary for graphics to work correctly. With open core, that's no longer possible, and future versions of VMware start with Ventura or newer for support now. So the only work around I was able to find in this situation was to install Linux on an external drive and run steam and use Proton for the windows games I want to play. Sonoma works well on this iMac with Open core, and the pro apps seem to work. I did test a macOS VM on this iMac a while back under Sonoma / OCLP, and paravirtualization worked. However third party 3D acceleration didn't. the machine would boot and then go to a black screen. If you check out the Sequoia thread, there was talk there about paravirtualization working in Paralells, so that might be worth you looking into to see if that will work for you.
"Paravirtualization is 3D acceleration for macOS guests" - is not true, sorry.
In general terms, very simplistically, this is a technology that provides an API for the hardware of guest virtual machines. (https://en.wikipedia.org/wiki/Virtualization#Paravirtualization)
The OCLP team clarified in their comment ( https://github.com/dortania/OpenCore-Legacy-Patcher/issues/1008 ) that this technology does not work in Sonoma and a rollback to Ventura is required. This was the reason for my initial question about the prospects.