Notes:

Here's a few of the character's from Cool-Kyou Shinsha's works labeled left to right (bold means the work is scanlated and * means an official translation exists)

Back row:
Ardalake from Peach Boy Riverside
Akiko from Metsuko ni Yoroshiku
Hajime from I Can't Understand What My Husband is Saying
Mizuki from Paranoia Cage

Middle Row:
Rino from My Girlfriend Without Wasabi
Haru from Ojojojo*
Shuri from Komori-san Can't Decline!
Masako's Sister from Horobi Club

Front Row:
Chintarou from ChiChi ChiChi
Tohru from Miss Kobayashi's Dragon Maid*

Not Represented:
Diotei Manual
Fukumaden
FullMaPla
Frau Rabbit
Mononoke Sharing*
RaButa