Today I started thinking of a YouTube video I remember seeing in the summer of 2017/2018. The video displayed multiple Screen KO's from the game Super Smash Bros For Wii U. (A screen KO is a special type of knockout in the series, example). The video took place on the stage Sukazu Castle. Two characters whose Screen KO's I specifically remember being in the video are Corrin (Female) and Villager (Using this costume). I believe the video was uploaded by either luke123ls or Jose18Gazza Yellow Gazza. The uploader also had a video on their channel which I remember being titled "Star & Screen KO: Barefoot People", which I only remember because of its' odd title. I attempted to search for that video as a potential clue, but I could not find it either. Both luke123ls's videos and Jose18Gazza's videos start with the caption "Star & Screen KO" so I believe that both videos were uploaded by them, but for whatever reason, they deleted both videos.
UPDATE: I have just contacted luke123ls and he said he never deleted any of his Screen KO videos, so either he didn't upload it, or YouTube deleted it without his knowledge.