I figured getting too in depth wasn't nessasary, but if I must...
Decidueye is similar to the pueo owl, which is a common physical form of the aumakua or ancestor spirits in Hawaiian culture. Considering Alola is based off of Hawaii, and Decidueye shares multiple traits with pueo owls, this alone is why its typing makes sense.
Sableye is a stylization of the Hopkinsville Goblin, a creature from an alleged Kentucky "alien encounter" described as having shining eyes, small legs, clawed arms and swaying hips (a movement that Sableye imitates in the 3D Pokémon games). This Pokémon is a ghost because..?
There. Point proved. Give me my cookies.
If you actually read what the Hopkinsville Goblin is instead of just going by the
name, you would understand why Sableye is a ghost.
Being based off an animal that is said to be the
physical form of a spirit doesn't make Decideye "ghostly" like the other Ghost types. It just explains why it has the
type.
Read what I originally said again, what you quoted.
Because you clearly did not understand me.
Though honestly, I'm not sure what Ghost characteristics it truly has since it seems as if its typing is exclusively because of what it's
based on. It has the least "ghostly" attributes of all the Ghost types.
I'm well aware
WHAT Decidueye is based on. I'm NOT questioning
why it's a Ghost type.
I'm saying that it is the least ghost-like of them. Which has nothing to do with its origin.
It could be based off of literally some Owl-Ghost God and still be the least ghost-like of the Ghost types if it's the exact same as it is now.
What attributes does
Decidueye specifically have that makes it ghost-like compared to like, Gengar? Every other Ghost has
some kind of visual attribute or has natural abilities or actions that have something to do with the supernatural. They are
obviously Ghost type. Decidueye? You wouldn't
know it was Ghost-type just by looking at it. Or even be able to GUESS. And it isn't given any sort of description of what it does that gives any indication it is a Ghost either. Literally the
only thing that makes it a "ghost" is mythos of the animal it is based on.
THAT'S WHAT I'M GETTING AT. It's the least "ghostly" of them. Doesn't mean the Ghost type doesn't make any sense, just that it doesn't
come off as a ghost.