Yoshi's eggs should be higher, you can ledge cancel them and spam, you have decent options and they can be used fairly strategically, with lots of angles/ranges and can go behind yoshi too. Fumi demonstrates alot of what he can do with them including edgeguarding stuff.
Ness' PK thunder and PK Fire need to swap spots, PK thunder leaves ness incredibly vulnerable to attack, it is a poor projectile and unspammable. PKT2 is not a projectile attack because it uses ness's body and its slow and easy to predict. PKT It has very few options aside a rare gimping oportunity. Pk fire can be done retreating and is at least usable provided proper mixup and spacing. If it hits it forces DI and can leave the opponent open to attack so there are options if it hits. I'd say using it as a projectile means using it as an attack so we have to leave out ness' ability to use PKT2 as a recovery tool as well. Yes it has use as a terrible recovery but that doesnt factor into the projectile worth so.
Samus' charge shot should be higher. When it is charged, opponents are wary of it and thus change the way they go about attacking samus. It reduces options in general while providing a kill opportunity off combo and or ledge guarding. I'd say it definitely deserves a higher spot.