Who created the character jessie for toy story?

Quick Answer
Jessie was created by a team including John Lasseter, Pete Docter, Ash Brannon, and Andrew Stanton, with the idea for a female character suggested by Nancy Lasseter.
Explanation
Jessie, the cowgirl rag doll from the Toy Story franchise, was developed and created by a team of Pixar talents including John Lasseter, Pete Docter, Ash Brannon, and Andrew Stanton. The concept for introducing a female character originated from Nancy Lasseter, who suggested the idea to the team. Jessie first appeared in Toy Story 2 (1999) and became a central figure in subsequent sequels. Her creation was part of an effort to diversify the toy roster and add emotional depth to the series. The character is voiced by Joan Cusack in the films, with Sarah McLachlan providing her singing voice in Toy Story 2.