The Incredibles. The DVD extra short "Mr. Incredible and Pals" (an in-universe cartoon) has a commentary track from Mr. Incredible and Frozone. Mostly, they're baffled at how bad it is.
Homestar Runner. "The King of Town" has commentary by Strong Bad. "The Search for the Yello Dello" has commentary by Strong Bad, Homestar, and Strong Sad. "Experimental Film" has commentary (hidden as an Easter Egg) by the directors Strong Sad and The Cheat... and Strong Bad and Homestar show up to crash it.
In an episode of American Dad! Klaus pretends his life is a DVD and he's supplying the commentary track. Late in the episode, he starts talking over a scene he's not actually in.
In Jonah: A VeggieTales Movie, an additional commentary is provided by Larry and Mr. Lunt.
The commentary for Brother Bear is by the moose Rutt and Tuke.
Fantasia 2000 has a commentary track highlighting each individual segment. For "The Sorcerer's Apprentice", Roy Disney is joined by Mickey Mouse, who provides insight on the filming of the short. Later, Donald Duck crashes the commentary track for his segment, "Pomp and Circumstance", but mostly he complains that he didn't get a song to sing.
In the Return of the King extended DVD, Andy Serkis is joined in the commentary by Gollum and Smeagol, and acts as the sort of balancing ego to their respective id and superego.
Making Fiends: In the DV Ds of the webseries there are alternate versions of each episode. A few of them have commentaries by characters.
"Charlotte's Fist Day Part 1: New Student" by Charlotte and Vendetta
"Charlotte's First Day Part 2: Show and Tell" by Marion
"Shrinking Charlotte" by Vendetta and Grudge
"Substitute Teacher" by Mr. Milk
Five hats means that five tropers think it is ready to publish.
You are saying that you think this draft is ready to be published. That means the description is not ambiguous,
it doesn't duplicate an existing trope, there are at least three examples, and the title makes sense.