How to list units with specific properties?

I use systemd-run --user a lot to run things. I want to be able to list only those transient units, but there seems to be no option to systemctl --user list-units to do it. I also cannot list the Transient propery in systemctl --user list-units --output json, so this is also not working for me. How do I list only transient jobs (Transient=yes)?