Based on this "What humans call Overkill | HFY | A short Sci-Fi Story" story shows Humanity's civilization is an intergalactic force of nature that exerts total control over at least 27 galaxies & present in at least 1,722 galaxies in some form with some estimates place them at over 10,000 galaxies under their influence. AKA a type 3 civilization a hundredfold.- https://www.reddit.com/r/HFY/comments/18avh1i/what_humans_call_overkill/
Also has Youtube version- https://www.youtube.com/watch?v=Teis4Evc7tU