New Galaxy Cinderella (incomplete) set — nurse uniforms! Each girl gets a different outfit.
Yui Yokoyama the 7.5th is a recent addition to the successors and has only appeared on two themed sets so far (the other being in the amusement park set). If this trend continues, we might see some of Lovetan the 12th, Akicha the 10th, Kyura the 7th, Haa-chan the 5th, Mochiko the 9th, Myao the 7th, Kitarie the 9th, Paruru the 8th, and Shii-chan the 6th, as all these girls appear in some 0048 promotional material and scenes in the anime.
Sashiko the 7th also appears in most of the sets even though she has graduated and only features in Orine’s episode.