Find the actor under Content folder

Hello,

I have some fbx files under Content->StarterContent->Animation folder(Animation is the folder I built, the naming convention for the files are phase1, phase2,…). I want to get a reference to each of these files during run time so that I can control when each of the object will show up in the scene. I read through the forums, some people suggested to use actor iterator. They assume the objects are already in World. My question is: Is there a way to go to the animation folder and call each file during the run time?

Thanks in advance.