There does not really seem to be a unifying theme for May, the pullip and taeyang look similiar to each other but the dal seems to be matched with Veritas/Tantus.
Pullip Saras
I am really excited about her she looks so unusual compared to some of the other recent releases although she does remind me a bit of Neo Noir 
Dal Setti
She is too adorable a flowery pirate..
Taeyang Wati
I really rather like him, I think he would potentially make an excellent addition to my pirate crew I just might have to preorder him.
Pullips and Junk 
oh wow, as soon as you mentioned Neo Noir I really saw it in her eyes
Barasuishou and Kirakishou’s eye shapes are also pretty similiar it is kind of disheartening that they keep on recycling the same stuff 😦