Kagiyama Hina's hairstyle already falls under front ponytail.

I would +1 the tress ribbon (or tress ribbons for plural) idea for the Yakumo Yukari and Fujiwara no Mokou hairstyle (with the term 'tress' explained in the wiki), and another +1 for the low tie ponytail, especially since I have some additional characters to throw in for that tag.