He's also slow, light, has poor recovery, subpar range, and somewhat prone to juggling.
As for strengths you listed, utilt only combos into itself 3-5 times on most characters. Down throw doesn't combo. All specials are quite laggy, and most of his moves have poor startup.
I can't comment on how accurate those you MUs are, since I'm not experienced enough to have an educational say, though I'm pretty sure he does not go even with Sheik and ZSS. Could you comment on how accurate they are @Feelicks?
I haven't played Kirby seriously in a while now, so my thoughts are rusty. I can't comment on Lucario or Pac since I haven't been through that MU commonly with Kirbs at all but I'll give my best thoughts on the other characters. Gonna call
@Mazdamaxsti since he still plays him more consistently, and can give more insightful input and correct what wrong observations I've made from my experience.

: Kirby loses this matchup, no questions asked. He gets camped, spaced out and killed early, especially with Purple Pikmin around. Less volatile than it was in Brawl, but still not very good. Despite Olimar's own poor aerial mobility, he at least makes it with it with his disjoints and hella good aerials.

: He actually does kinda alright here. Close to even, but it'd be more in Fox's favor if I had to pick. Though after the up throw buff, it'd definitely benefit Kirby more since he now has a good option to close out Fox's stock due to his own poor endurance.
This set shows very well how the MU goes, imo. One of the best Fox players vs. one of the best Kirby players.

: Uh, how does Kirby win this again?? Villager is a monster at zoning and keeping people out, and Kirby is very susceptible to just that. Villager doesn't have much trouble killing off Kirby, especially with dtilt, utilt, and up air. His edgeguarding game is also potent to Kirby, especially since he can take advantage of Kirby's linear, slow recovery. Villager also has a frame 3 nair to break out of Kirby's combos. He's also practically impossible to edgeguard thanks to Balloon Trip covering so much distance and having good maneuverability.

: Wario beats Kirby as well. He has one of the best air speeds in the game, and can just air camp Kirby out most of the time on stages with platforms to get a free Waft charge. He can weave in and out with rising aerials, and back air is even a kill move. He benefits well from Rage thanks to him being a heavyweight, making it even more deadly if Kirby gets hit by something like his forward tilt, Waft, or his forward throw. It also helps Wario has one of the best command grabs in the game to assist him in racking up damage. Kirby can Inhale it and copy him, but good luck catching him first.

: As a running tread in this post, Kirby struggles against zoners. Unfortunately R.O.B. is one of the best of said field in the game, and can easily keep him out of his range with lasers, gyro and nair. Kirby's poor vertical survivability bites him here too since he's susceptible to being Beep-Booped (even if he can DI out of it), and R.O.B. has a myraid of finishers and moves that can put Kirby in an uncomfortable position. Down smash is a semi-spike, and Kirby hates semi-spikes. Up smash has a hitbox that pulls opponents into the actual hit, is great below platforms and comes out fast and has large range, and a fully charged Robo Beam is good for KOing offstage at high percents. R.O.B. is still combo food and Kirby goes get good reward once he gets in and penetrates his defenses, but it'll be a uphill battle for him to do so.

: I don't know how to feel about this one. Sometimes I feel like it's even, sometimes I feel like Kirby is at a big disadvantage thanks to Falcon's speed, juggle game, KOing power and great dash grab. Falcon is combo food like R.O.B. due to his high weight, but Kirby has trouble getting in thanks to Falcon's own great movement and frame data. Both characters are at a significant risk offstage due to their below-average recoveries, so I suppose that's a thing.
Oh dang it! I missed a bunch of characters. No worries. I'll add them. Also, I didn't include the Miis because I have no knowledge of them and they are basically excluded from all competitive play at this point.
Feelicks, I think you need to calm down already. You have spent the past few pages raging at people over their opinions. Just chill out. We're just trying to have a mature discussion and everyone has their own opinions.
Sorry if I've been getting heated, promise to be more chill about this entire thing. I really do take this kinda stuff way too seriously, and I apologize. It just bothers me when I see many people make the same incorrect statements a lot of times.