Hi everyone! So Ive had my 4 cacti for about a year now and I have noo clue what they are haha. I know one is called a coral Thank you for the help! Sorry for the sideways picture
I guess 'coral' refers to the one in the blue pot in the right picture? That looks like a crested form of Euphorbia lactea. All I have seen have been grafted. Don't know about the one in the red pot, and I agree with Lila Pereszke about the two on the left.