Since version 4.0 LXD also natively supports virtual machines and thanks to a built-in agent, they can be used almost like containers.
lxc image list images: | grep VIRTUAL-MACHINE lxc launch images:ubuntu/21.04 vm2104 --vm lxc launch images:ubuntu/21.04/cloud vm2104c --vm
Links
https://linuxcontainers.org/lxd/getting-started-cli/#launch-a-virtual-machine