I'm not super clear on the details, but my impression is that bhyve and nvmm are functionally similar, or perhaps bhyve is sort of like qemu+nvmm without using the full qemu emulation. Sylve is sort of like Proxmox.
I wonder if anyone has contemplated making sylve work with nvmm. https://gyptazy.com/blog/boxybsd-moving-from-proxmox-to-bhyve-with-sylve/
