Detective Comics, Saga, and My Hero Academia were the familiar titles at the top of the graphic novel charts broken down by content category.

Numbers for graphic novel sales by content category this month show steady-state perennials and one big week.

These are estimates of the sales on graphic novels by Diamond U.S. to comic specialty stores during June 2019.

Last week it was suggested here that the debut of Pixar's Toy Story 4 would be something of a defining moment in diagnosing the virulence of the case of "sequelitis" that is affecting the 2019 box office, but the Pixar film's $118 million opening, though well below expectations, didn't really prove to be definitive.

Two spin-offs, a reconstituted Men in Black International and a multi-generational Shaft stumbled as the summer box office took a turn for the worse with total revenues down nearly 53% from the same weekend a year ago when The Incredibles 2 debuted with a stellar $182.7 million.

The Superhero chart has 12 new titles; the Manga chart has a new shojo title, and the Author chart is a mixed bag.

Here's a look at the actual sales of the books on the list of the Top 20 Author, Manga, and Superhero Graphic Novels in the book channel.

These are estimates of the sales on graphic novels by Diamond U.S. to comic specialty stores during May 2019.

Media tie-ins and manga dominate the Top 20 Adult Graphic Novels in the book channel.

The actual sales numbers add some interesting angles to the Top 20 Adult Graphic Novels in the book channel.