Anka VM Templates support the following macOS versions:

Monterey installation inside of the VM seems to be much longer than previous versions. Please be patient and DO NOT interfere with the installation manually. If you want to confirm it’s progressing you can launch the VM viewer with anka view.
Monterey VMs require ablk as the disk driver. The anka create command will set this, but be sure to choose it in the Create new VM section of the Anka application instead of virtio-blk.