Which toy story characters have the most collectible figures?

The only character for which current evidence explicitly mentions collectible figures is Jessie, the cowgirl rag doll introduced in Toy Story 2. According to the verified Wikipedia entry, Jessie has been released as a toy in various forms, and her popularity as a figure is noted in the franchise’s merchandising history. No other Toy Story characters are documented in the provided sources as having collectible figures, so we cannot confirm that characters such as Woody, Buzz, or others have comparable collectible status without additional evidence. Therefore, based solely on the verified information, Jessie stands out as the character with known collectible figures within the Toy Story franchise.