Original posted video here: • Roy Kill Confirm Showc...
I made a quick doc with combo percentages for both uair jab and uair utilt on a handful of characters, ranging from f3 airdodge to f1 escape options. (Palu for f3, Mythra for f2, Luigi for f1, etc.) Check it out here: docs.google.com/spreadsheets/...
I'll note that while I did discover this confirm myself, some other players did know about it through independent testing before I released the original video in July 2021. Few knew about it however, and even less knew that it could be a true combo. I just made the video about it, and (hope) I made it a bit more mainstream for some people.
Updated for 2022 with new clips and extensions.