NO.1 Nozomi Tojo (東條希) of LoveLive! School Idol Project Nozomi Tojo cosplay from Snowcake Nozomi Tojo cosplay from Joanna NO.2 Kotori Minami (南ことり) of LoveLive! School Idol Project Kotori Minami cosplay from NAI (youha) Kotori Minami cosplay from Harumaru NO.3 Maki Nishikino (西木野真姫) of LoveLive! School Idol Project Maki Nishikino cosplay from Cherry Lau Maki Nishikino cosplay from Asae Ayato NO.4 Umi Sonoda (園田海未) of LoveLive! School Idol Project Umi Sonoda cosplay from Haruko Chi Umi Sonoda cosplay from Chunhwa NO.5 Hanayo Koizumi (小泉花陽) of LoveLive! School Idol Project Hanayo Koizumi cosplay from QiYing Hanayo Koizumi cosplay from ReiKKKa NO.6 Eri Ayase (絢瀬絵里) of LoveLive! School Idol Project Eri Ayase cosplay from Yomiya Kokoro Eri Ayase cosplay from Rutsu NO.7 Honoka Kosaka (高坂穂乃果) of LoveLive! School Idol Project Honoka Kosaka cosplay from Waka Ryou Honoka Kosaka cosplay from BiscuitPhoto NO.8 Niko Yazawa (矢澤にこ) of LoveLive! School Idol Project Niko Yazawa cosplay from ZYUkaede Niko Yazawa cosplay from Kimiko & Yuri Yakami NO.9 Rin Hoshizora (星空凛) of LoveLive! School Idol Project Rin Hoshizora cosplay from ERIN Rin Hoshizora cosplay from Romie
Source: http://www.rolecosplay.com/blog/9-most-popular-roles-of-love-live-school-idol-project/