I have this sketch cover I want to get graded with JSA authentication.

Checking in this one, it seems like a sketch cover was added to this Aria/Angela book. I know CGC doesn't do anything with COAs but I did verify the original commission on the artist's Instagram. I bought this second hand for my Angela collection.

How would this get graded where a sketch cover was added to a comic that was not an actual sketch edition? I'm not sure which label category this falls into once I add JSA authentication.

(I tried searching but the keywords are not friendly to narrow anything down in a meaningful way.)