Iconic choreo moves?

I mean, everyone knows this move from Next Level lol

If we're talking iconic choreo, it's hard to beat "Tell Me" by Wonder Girls. It's the song that actually popularised the "point choreography" and YouTube dance cover trends.

The choreography for the song was simple and widely imitated: by October, many fan performances of the dance circulated on video sharing sites such as YouTube and Daum, including one by a group of policemen who were eventually profiled on SBS's Star King and performed both in front of and with Wonder Girls. This was dubbed the "Tell Me Syndrome" and led the girls to be named "Korea's Little Sisters". Many celebrities, including Shin Hye Sung, Super Junior's Kim Heechul, Nam Hyun Joon and Hong Kyung-min, also sang and danced to the song at their own fan meetings. The song was labelled a "pop phenomenon" by the San Francisco Chronicle, and YouTube co-founder Steve Chen stated that the dance clips were among his favorites on the website.

Tamar Herman of Billboard called the song the most influential song in Wonder Girls' career, writing that it "went viral as YouTube was just beginning out and resulted in a dance craze in South Korea based around the single's easy-to-learn choreography"

Music critic Hwang Seon-yeop said that "If I were to pick the most important event in the chronicle of K-pop, I think I could say without hesitation that it was the 'butterfly effect caused by this song'". Hwang added the song symbols "the starting point of the so-called 'hook song' trend, which uses addictive repeating phrases and emphasizes the importance of 'choreography' in idol pop. [...] This is a work that defined the concept of K-pop and opened up its revival in earnest." (source)

blackpink's gun hands and bazooka(?) hand movement during DDDD and KTL

aespa's next level

ryujin's shoulder dance

twice's TT and Fancy (specifically the "fancy you~u-u-u" part)

big bang's bang bang bang and fantastic baby

izone's panorama hand gesture at the start and end of the chorus

since genies leg dance was already posted. Here is another icon

how about one from each of my favs

Twice - the TT from TT

BP - finger guns from D4

RV - I would say Red Flavour (I wouldn't even know how to describe it)

Gidle - the crown from OMG or the drums in Dumdi Dumdi

izone - the little hand thing from LVER

Itzy - shoulder dance from Wannabe

Aespa - the hand thing from NL