Uncredited appearances and credited roles to show up on IMDb

I've added an uncredited role to works from Nintendo that appear on IMDb that do not show up on the normal page, as the rule is that until a credited role appears, these remain hidden. I have a credited role for the person but it appears in something that would not have an IMDb page (namely, a supplemental book for the uncredited role; in which it is stated that the individual is indeed working on the project). Is there a way to submit this as proof of working on titles uncredited?

Specifically the uncredited role is a debug tester for Animal Crossing: New Horizons
https://www.imdb.com/title/tt10476972/fullcredits/?ref_=tt_ql_1

And the credit is in the Companion Guide by Future Press: ISBN 978-3-86-993100-5
https://www.future-press.com/books/animal-crossing-new-horizons/

I am in possession of this book and can provide evidence.