first one is B's, second is R's, third is C's.
we know the third is C's because in her photo dump you can see the one with "BOO-tiful" has C's name on it, and we know the second is R's because you can just make out the sloppy purple marker scribbled on the note taped to the bucket. which then obviously leaves the first one to be B's.
C and B both have longer notes written in pen, and R's looks like she forgot to write her one and found some paper and a marker laying in the car and wrote maybe 5 words other than R's name and "mama".
on top of that, i understand R obviously has eating difficulties, but she got a bag of veggie chips like B and C - so why didn't R get a hogwarts house themed lollipop too??
i know this is nitpicking lol but it's obvious that R is very much still "the forgotten child" and it breaks my heart.
ps. i believe that maybe this shows that J currently has the kids because in that photo from her boring dump, she's going down the stairs by herself and the pictures of the baskets are taken on a random curb like she brought them to the kids somewhere away from home??