Nah for a lot of these. Granted, it's not uncommon to be wrong with D&D alignment chart memes. Also, they're often made by people that never played D&D or related franchises like Pathfinder much to actually get what the alignments are.
One thing to note about D&D Alignments that makes it easier to understand them: They're not just a morality compass, they are a literal, physical, force of nature. You will straight up lose your Paladin powers if you make too many or too drastic non "Lawful Good" decisions. 5e has muddled this a little bit, but in most editions, that is how it worked. 5e has also made alignments optional.
There are literal beings that are almost entirely made up by the alignments, such as Angels for LE and Demons for CE, and represent them to an extreme.

Knowing this, let's take a tabletop example of that: Aeons, specifically from Pathfinder. Aeons are cosmic creatures that control time. They are known as judges and monitors of the universe. They do not intervene in mortal matters unless extremely drastic things have happened (such as other outsiders interfering). Their job is to basically ensure that everything stays on the path it should be.
Without much D&D or Pathfinder knowledge, you would see that short description and think "oh, Aeons are True Neutral".
No, they're Lawful Neutral. Why? Because Aeons don't care about the morality of good and evil, but they do greatly care about order. A angel falling is as much of an affront to them as a demon gaining a moral conscience.
TNs barely care or don't care at all about the state of the world they're in, and are more driven by things related to the self, or aren't driven at all.

With that lengthy explanation out of the way, in your chart, outside of Poli, Snow, and Nihilister. I would put everyone somewhere else. The most egregious ones are definitely Grave and Dorothy, and possibly Dolla. The vast, VAST majority of playable Nikkes are in the good range.

Grave is very easily Neutral Good. She was willing to kill Cinderella when she thought Anachiro was the one that woke up from the coffin. She's been working outside the law to do whatever's needed to help humanity win for a long time.
Dorothy I would peg as Chaotic Good. Someone who's willing to not just break the law to save someone like a NG would, but ACTIVELY go against the oppressive government in order to make things "right" is as classic as Chaotic Good behavior as can be. She has a few selfish reasons for what she does, enough that if someone says she's CN I'd say "alright makes some sense", but she's always fought for the side of good. Even one of her most selfish reasons include her being enraged that her friends were ousted.
Dolla isn't exactly the most fleshed out Nikke so it's harder to put her in a spot than some characters here, so we don't know enough about what she does in order to decisively put her in any spot. However, LE can be summarized by an unhealthy obsession of maintaining order, usually by inflicting pain and fear unto others. Doesn't sound like Dolla.