Gonna take a crack at guessing all these (this is fun), probably 50% wrong.
His face looks like a ruined lasagna
All for One or Dabi, I think AfO
Quirkless nerd gains 12", doctors hate him!
Deku
Golddigging girl who literally could have her head in the clouds
Mount Lady
"Just get it over with...fuck this class" guy
Eraserhead
Is-that-a-mask-he-wear-or-his-face guy
Think Tentacole/Mezo Shoji
boobs
Alien Queen Ashido or Mei? Not Momo since she shows up afterwards
that girl who did the internship with the girl who is practically naked in her hero costume
Kendou
the girl who is practically naked in her hero costume...literally for practicality
Yaomomo
disgusting warty tongue guy with knives and a dream
Stainu
the guy that...well you jsut gotta HAND it to him (ha!)
Shigaraki
bartender cloud...
Kurogiri
The guy who shouts a lot
Could be Bakugo, Inasa or Twice
the girl who makes quirk enhancing stuff...doctors also hate her!
Eri
that girl who secretes stuff form her stomach?
Froppy!
"no matter how much I tear off my clothes, the guy always falls asleep" girl
Midnight
Tooru
No clue dude, sorry
If he doesnt cut his hair once every five seconds it'll jsut keep going i bet
The guy from Shiketsu high? The one that looks like a bush
the symbol of peace guy...what'shisface
Aru Mighto
vault boy tintin-ass glitch-man
Mirio
the snake girl from the ova, damn
Froppy's friend? Mongoose lady
Anima
Koda
the dude that says whey
Kaminari
Starbucks Coffee spill face
Could be All for One or Dabi, I think Dabi
coin purse face (on a good day) / a lot of coin purses... face
I have no clue about either of these, maybe I'm stupid but I'm at a loss with these ones
the girl that horikoshi's staff members think is hot...but you have had to have read the itnerview to know who that is
I remember the staff enjoying Kendo's design before she appeared, but she's here already so I'm not sure
The most beautiful guy says him
Laser navel bro
space astronaut guy
Thirteen
fire dad
Endeavor
glasses trackstar
Iida
dwayne the rock johnson
Kirishima
the fat dude who looks like a ninja turtle
Fatgum? If anyone looks like a ninja turtle it's Stain, I'd imagine
the blood fetish girl
waifu Toga
the crow lookin dude
Tokoyami
Ojiro
I like that he has so few characteristics established so far that this is his description, we need more Tailman pls
guy from vigilante/big guy from vigilante/hot girl from vigilante
I haven't read any of Vigilante, but just from the bits I've seen I'd guess that the second one is Knuckleduster and the third is Pop Step
vine whip irl
Shiozaki, the 1-B nice girl
the asshole dude from the sports festival that bakkugou WRECKED
Monoma
the girl who keeps Monoma in line
This is the third time where Kendo shows up in the list, she's the only one I can think of
the thing that comes out of Tokoyami's belly button
Darku Shadowu
sticky tape guy
Sero
the super hot hero with the snakes on her head
Uwabami? Think that's her name
growing lady
Mount Lady, who has shown up twice if this is her
kiss girl
Recovery Girl, collective grandma of everyone
old guy
Gran Torino
wood man
Kamui
purple hair no sleep kid
Shinso
the gerbil
Nezu, I think
the sad guy
If I had to describe any character as "sad guy" it'd be Todoroki