I'm a fond of characters that who are hyperactive but usually were'nt given a recognition from the series. And it's so sad to see that it wasn't included from the list even though it somehow specified on the Mixdere section, I hope you made an another section that has a description.
Don't get me wrong, I know that the dere types are very broad and I also love the list here, it's informative and it seems like that it's accurate, I'm just a little bit sad that Genki or Neek wasn't included from the list even though from the unofficial section of dere. So here is the description,
The Genki Girl is a character—usually a schoolgirl, but not always— possessed of an over-abundance of energy, such that she runs everywhere (often with arms waving wildly or outstretched like airplane wings), speaks quickly (sometimes unintelligibly so), and always does everything fast, fast, fast! She's filled with confidence and determination, regardless of whether she's competent or not. Although usually played exclusively for comedy, sometimes the Genki Girl slows down for a serious or introspective moment. But not for long—she lives her life full-throttle. To sum it up, a good way of telling whether a female character is genki or not is to see if her family and peers are exhausted, astonished, or even creeped out by her chronic outbursts of vitality. (A female character is by far the more common version, but this trope is not limited to females.)
Minori Kushida from "Tora Dora"
Hikari Hanazono from "Special A"
Ika Musume from "Squid Girl"
Mei and Satsuki Kusakabe from "My Neighbor Totoro"
Miyo Sasaki from "A Whisker Away"
Sugar from "A Little Snow Fairy Sugar"
Setsuko from "Grave of the Fireflies"
Misaki Kamiguusa from "Sakurasou No Pet Kanojo"
Tohru from "Miss Kobayashi's Maid Dragon" (though it's a mixdere, but sort of being a genki)
Umaru Doma from "Himouto! Umaru-chan" (same as Tohru, she's also a Otakudere)
Midori Asakusa from "Keep Your Hands Off Eizouken"
Yuzuko from "Yuyushuki"