What phobia do both Shaggy and Scooby Doo suffer from?

"Scooby-Doo and Shaggy Rogers share several personality traits, including tremendous appetites and tendencies toward cowardice. Due to their said cowardice, Scooby-Doo, as well as Shaggy, would often have to be bribed by their friends (Velma, Daphne and Fred) to go after the costumed villains with "Scooby Snacks," a biscuit-like dog treat or cookie snack (usually shaped like a bone or Scooby's dog tag), although sometimes, Scooby Snacks won't work on Shaggy, so he may have to be tempted with two Scooby Snacks (or as with some episodes, the gang may even have Scooby Snacks Industrial Size). ... In Shaggy & Scooby-Doo Get a Clue!, Scooby, as well as Shaggy, are not as cowardly as they were in previous series, although in the episode Lightning Strikes Twice, Scooby is shown with a severe case of astraphobia, something he rarely had in the other shows. Scooby-Doo also has the ability to gain awesome powers by eating certain Scooby Snacks (bone shaped dog treats)."

https://en.wikipedia.org/wiki/Scooby-Doo_(character)

Astraphobia is the fear of thunder and lightning.
https://www.healthline.com/health/astraphobia

Fear of ghosts is termed "spectrophobia"
http://www.medterms.com/script/main/art.asp?articlekey=12292
The link doesn't mention either Shaggy or Scooby Doo I am afraid, just the irrational fear of ghosts, but can I cite many wasted hours in front of the t.v in the 1970s as evidence that they suffered from this condition.

given that they both seem to be perpetually frightened of anything and everything, they could be described as suffering from panphobia (also pantophobia and pantophobia), which is an irrational fear of everything.
http://www.panphobia.com/