I know it's weird to say that I've been inspired by my own blog post, but I wanted to hear other peole's ideas.
Ghost-types can float through walls as demonstrated by the PMD series and several anime episodes, but idk, we've seen some of them having solid bodies like Golurk and Golett. Yamask and Cofagrigus are also likely to have a solid body since they have to carry those things around. Drifblim can carry people, and Drifloon gets pulled around.
It could be just me with a biased thought of "Ghosts=transparent souls that can float through anything". Several ghosts like Casper and his family had bodies that could float anywhere, and like another user noted, Danny Phantom was depicted to be able to switch his body to be solid or not at will.
But Fighting-type moves and Normal-type moves don't work on Ghosts at all. This must mean that Jump Kicks just go directly through the Ghosts' body and has no effect... maybe?
Does anyone else have opinions on Ghosts-types having a solid body?