For all otaku out there! Nagato Yuki: which one is she?

I've been trying to brush up on my otaku knowledge. I know a fair bit already, but I've gotten stuck on one thing: what is Nagato Yuki?

Now, before you start spamming me with answers like "A HUMANOID INTERFACE LULZ", that's not what I mean. I'm talking about moe archetypes. I know for a fact she's a(n ex-) meganekko, but what else? Is she a stoic? A kuudere? Okay, maybe not a kuudere, but possibly a dandere? Or is she just in the "silent girl who reads by herself off in the corner" category? Best answer goes to the person who can sway me!

I'll even provide a few definitions for those who don't know these terms. I'm all ears for your opinions.

Meganekko - Glasses girl

"Deredere" - Sweet attitude. Pops up in terms like "tsundere" and "yandere".

Kuudere - A combination of "kuuru" (cool) and "dere". Acts cynical and expressionless outwardly but is actually quite tender inside.

Dandere - Abbreviation of "danmari deredere" (Silent deredere). Doesn’t speak at all mostly, and is quiet and calm in front of other. However, she (or he) is loving when in the company of loved ones or close friends.

Stoic - This is an English word, for once. Just look it up in a dictionary.

P.S. *Spoilers for those who haven't read Disappearance of Suzumiya Haruhi* And I mean regular Nagato, not the Nagato in the alternate reality she creates. I know for certain that alternate Yuki is a dandere. It's so obvious.