How to filter a class selection widget to only show classes that represent assets that can be created in the content browser ui?

I have the UPROPERTY below, its in a class inheriting from UDeveloperSettings so it shows up in the project settings.

UPROPERTY(config, EditAnywhere, meta=(MetaClass="/Script/CoreUObject.Object", DisallowedClasses="/Script/Engine.Actor", HideViewOptions, ShowTreeView, ForceInlineRow))
Map<FSoftClassPath, int32> ClassMap;

The issue I have is that the class picker widget that shows up is so cluttered. Can you filter the widget to show only classes that can have a representation in the content browser, user facing asset classes. Does anyone have a good way to handle this? Honestly I’d even take a good way to exclude the majority of classes that non-engineers will never knowingly interact with.

This could be a wild goose chase but thought it was worth an ask.

havent tried myself but isnt it just

UPROPERTY(EditAnywhere, meta=(MetaClass="DeveloperSettings"))

or

UPROPERTY(meta=(AllowedClasses="DeveloperSettings"))

according to what i read you dont include the U Prefix