Yeah, the Gholdengo that was used in Centro's example has very little investment into everything except SpA, has an Impish nature, and is level 11 so this is hard, but I did some VERY RUDIMENTARY napkin math and a low-end estimate puts its statline at 78/50/90/120/85/75, assuming every single one of its stats has perfect IVs. That HP could be 75 since that stat has ever so slightly more investment into it than the others, but mons have had weird numbers for their BSTs before. I don't think that's super far off from what someone else in this thread guessed when I was originally typing this.
Now, that's obviously inconclusive as fuck based on how low-level this thing is so its stat ranges could be vastly different, but it doesn't look bad (ESPECIALLY considering it inherits Aegislash's phenomenal typing).