The third hairstyle reminds me of Mei Kamino from Godzilla Singular Point. I don't know if they have hair parts for any of these in the works.
Sousai Shoujo Activity DiaryMadoka's Hairstyle Change!So cuteMushroom!It's fresh!Pineapple!It's just food you've been having!A mega helping on top!She insisted on it!?Dumpling hair!
She uses the term "odango", although "baozi" or "manjuu" might be more precise.