Visually editing components created with CreateDefaultSubobject

What you are looking for is a “Scenegraph”. For now Unreal Engine does not support well such paradigm.

But they are working on it, with the new scenegraph system in Fortnite and UEFN (Scene Graph | Unreal Editor for Fortnite Documentation | Epic Developer Community). Hopefully, this will come in UE 5 in a future version.