What kinds of network can be project-specific?

Suppose I want to give a project its own networks - in particular so it can have its own NAT network without seeing any others.

Creating a “bridge” network doesn’t appear to be allowed:

$ incus project create testproj -c features.networks=true
Project testproj created
$ incus network create testbr0 --type bridge --project testproj
Error: Network type does not support non-default projects

So my question is, what kinds of network can be project-specific?

Never mind, I found a tip here:

Unlike the other network types, you can create and manage an OVN network inside a project.