* Gene Wilder's portrayal in the 1971 film: Wilder had a distinctive, high-pitched voice that could be described as a tenor with a slightly nasal quality. It was full of energy and whimsy, fitting the character's eccentric personality.
* Johnny Depp's portrayal in the 2005 film: Depp's Wonka was more of a baritone with a deeper, more somber tone. This reflected a darker, more ambiguous side to the character.
Ultimately, the voice type is subjective and depends on the actor's interpretation and vocal abilities.
It's interesting to note that both actors' voices were uniquely memorable and contributed to the iconic nature of their respective Wonka portrayals.