What toy story figures are most sought after by collectors?

The only information available pertains to Buzz Lightyear, a fictional character in the Disney–Pixar Toy Story franchise. Buzz is a superhero action figure distinguished by a lime‑green, purple, and white space suit, originally a one‑man band toy named Tinny that evolved into a space ranger during the development of Toy Story. The character is voiced by Tim Allen and appears in all installments of the Toy Story film series. Woody is also mentioned as the protagonist of the franchise. No evidence is provided regarding collector interest, rarity, or market demand for any Toy Story action figures. Consequently, I cannot identify which figures are most sought after by collectors based on the verified sources.