Not sure which ones you recognized but the one with blonde hair is Ray, the one with green hair is Haley and the one with black hair is called Double Vision and this trio is from a game called "Binary Star Hero".
The character with white hair is Aeron and its from a game called "Limerence", created by catsket. The one with the...pink..ish?hair is Jack from "Jack Frost", a game developed by Jen Flowers and lastly, the one with red hair is Lilith from "Seven Bloody Nights".
I hope this helps.