mOOnpunk ok, it's available on itch.
Would it work if there were many sprites in a list? In other words, can I create a large list of sprites/text, stacked on top of each other and have it scroll through them, kinda like a normal scrolling listbox?
Yes, the scrollview can scroll a group of objects.
The group of object can be for example a map with additional sprites on top of it.
Or a list of items that are generated by the gridview addon like in the gridview demo.
Basically anything, as long you group the objects using the "gameobject" addon.
In fact, is there a demo of the whole thing that I can try before buying?
If by demo, you mean a C3 project file, I'm afraid I can't provide that.
However you can check a tutorial here on how a scrollview or a scrolling list items is made here:
Hopefully the addons can help you with your use case.