In the examples above all c++ classes were created from the ue4 editor and all the c++ class files are in the project source folder, but do not show up in the ‘content browser’.
The below image is of the source folder from Windows 10 Explorer perspective.
In the VS2017 Output window below you can see the build succeeded and the files are seen, but they do not display in the ‘content browser’. only the Actor class and the GameModeBase show in the ‘content browser’.