User blog comment:Angel Emfrbl/V4 reaction notes/@comment-7336976-20141105134353/@comment-53539-20141106080310

The 3 most popular females likely to get songs are Miku, Rin and Gumi. IA may have impacted this a little, but despite her popularity IA is still lagging behind popularity, only because of numbers though at this stage.

http://ch.nicovideo.jp/kadotanimitsuru/blomaga/ar428894

The top 3 females for uploads are Miku, Gumi and Rin in that order from 1st to 3rd. Ia is the fourth, or was since this was done in 2013 and is likely very dated. Rin is legitly one of the most popular females in her own right either way.