You might consider cartoons like 'Tangled: The Series' where Rapunzel has yellow hair. Another one is 'Dora the Explorer' whose hair is sort of yellowish.
One such cartoon is 'Sailor Moon', where some of the characters have yellow hair.
One popular cartoon with characters having yellow hair is 'The Simpsons'. Marge Simpson has bright yellow hair.
One example could be Rapunzel from Tangled. Her long yellow hair is quite distinctive.
One such cartoon could be 'Avatar: The Last Airbender' where some characters have unique hairstyles, and there might be a boy with spiky yellow hair.
You might consider 'Tangled'. Rapunzel's long and voluminous hair could be seen as having poofs. The way it's animated and styled gives that impression. Also, in 'Brave', Merida's wild red hair has some poofy elements to it.
One such cartoon could be 'My Little Pony: Friendship is Magic', where some ponies have orange hair.
You might consider 'The Hunchback of Notre Dame'. Quasimodo's hair is often depicted as messy. Also, in 'Brave', Merida's hair is quite unruly.
In 'Steven Universe', there are characters with unconventional hair. Like Garnet, whose hair is a big part of her distinctive appearance.
One such cartoon is 'Tangled' where Rapunzel has long and wild hair. Another could be 'The Powerpuff Girls' with their unique and colorful hairstyles.
Well, 'Avatar: The Last Airbender' comes to mind. Aang's hair is often depicted as wild and unruly. Also, in 'Teen Titans', Raven has that kind of wild hairstyle that adds to her mysterious look.