The Leaf Pop Century checklist makes use of multiple signed card styles. The main Autograph set is pretty standard as far as Leaf sets are concerned, but the themed inserts offer a bit more in the design department. Options include Classic Roles noting a specific character from a series or film, as well as female-centered Heartbreakers, science-fiction-based Sci-Fi Signatures and Vinyl Signs for musicians.

There are also Cut Signature cards and Dual Auto cards, which obviously feature two different signatures.

Past autograph signers include Al Pacino, Harrison Ford, Adam Driver, Ben Affleck, William Shatner, Stan Lee, Chevy Chase, James Gandolfini, Pamela Anderson, Tim Curry, Megan Fox, Dick Van Dyke, Jennifer Lopez, Burt Reynolds, and many more.