I am not hating, but I would place jigglypuff in high c or low b, maybe mid c. And I think fox should be in b.
I actually think Fox is fine at A- because what separates him from the characters below him is his brain dead ability to rack up damage effortlessly with his jab lock. He's not good enough to be A tier though (mid or high) because of his predictable recovery and falling speed making him combo food and easy to intercept, though the latter falling speed is a double-edged sword that helps him immensely with follow up ability.
Without jab lock, he would be B tier no question. However, his jab lock is too good, it's basically character and percent specific wobbling. Don't get jabbed!
(we remember
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For example, Diddy after he's at 40% gets trapped, Fox can bring him to 95% just by pressing A twice per second. On Falcon, at 100%, Fox can lock him and follow up with a guaranteed U-smash, making rage-Falcon a non-problem in the matchup.
I think A tier is fine, and honestly, I think the Japanese tier lists so far are the only ones to have gotten Fox's placing correctly. He's not the laser shooting shining beast he used to be, but he's still a speedy damage racking little monster.
Also, why are you all arguing with Emblem Lord... lmao. He pours his heart into that character despite how they gutted him. Liking a character does not mean you have to say he's good: Emblem Lord recognizes the character has a ton of shortcomings in this game and doesn't sugar coat it.
If you all think Marth is better than what the Marth main is saying though, then prove him wrong by going to tournaments and placing. Internet warriors fight with words, real og's take their words to the Battlefield (or whichever stage) of Smash.