Low Entry Plugins

I’m not sure if that’s possible, I think you have to keep track of what levels are loaded/unloaded yourself. Like this for example: How do I call current streamed level in blueprints? - Programming & Scripting - Epic Developer Community Forums

The folder functionality requires asset or file code, but I don’t think this works correctly in a packaged game, you’re probably best off making a list of maps/levels yourself in blueprint, that way you know it will always work correctly.