Profile indicator on Gospel Library Folders

My question is this:

Why is there a little blue circle with a profile icon in the bottom left hand corner of some random folders in the gospel library application?
Is it just indicating that those resources are only for specific callings uses or what?

Yes, it indicates role-based content – content you have access to when signed in, because of your calling. A common feedback is, for example, "my wife can see the 2025 General Conference Leadership Instruction videos, but I can't" – the icon provides a hint to help people understand that not everyone will see it.