[arcticscythe]

Sounds like marbles over 3k RPM thats rod knock, I just had a complete engine build done on my 13 for the same issue. Only place I could hear it was when I was coming off the throttle from over 3,000 RPM. In your 1st video I hear it at 9 seconds and in your 2nd video it definitely sounds like something is loose or knocking around 3k RPM. I cant hear it in your 3rd video but honestly I wouldn't keep driving it around in that shape. if you think its knocking get it on a flatbed and take it to your local tuner.

Best case they tighten down a piece of trim or heat shield, worst case its motor time.

Hope that helps