Create class without showing on node list

[KoBeWi]

Describe the project you are working on:
A game with lots of scripts.

Describe the problem or limitation you are having in your project:
I use the typing, mostly for better autocompletion and stuffs. However I have many scripts for which I want to have types, but I don't instance them from the editor. So I either use class_name and cope with my node list being cluttered or preload the script, which kills the purpose of class_name :I

Describe the feature / enhancement and how it helps to overcome the problem or limitation:
I just want a way to use class_name without adding the class to node list, so I can use it as a type.

Describe how your proposal will work, with code, pseudocode, mockups, and/or diagrams:
Maybe this could be annotation, like @no_editor class_name MyClass. This would register the type, but it wouldn't show on the node list when adding a child node.

If this enhancement will not be used often, can it be worked around with a few lines of script?:
I can workaround it with preload(script.gd), but it's meh.

Is there a reason why this should be core and not an add-on in the asset library?:
Can't be an add-on.

[Shadowblitz16]

This is exactly what i am looking for.
I think it should be by default not added to the node/resource dialog
Its more likely they are using it for type name then a node/resource template