Built-in modules LoadingPhase?

I’m debugging the launch execution of the editor.
I tried to figure when are modules loaded, and realized that it checks the LoadingPhase value in ModuleDescriptor.cpp, but it does so only to custom modules I implement in the project, and plugins.
Are all built-in modules in loaded in the default loading phase?
Is there a way to change it?

I also need to know that. How do I find out?