Same cosplayer in post #330640 post #330689 post #220905 post #300001, is she from some series or an original character?

Not Found seems to have a battery of original characters that are used to cosplay various outfits. The file names on this girl are "Sayuri", and there's also a "Kiyone" and "Aya" that are used repeatedly.

The artist's profile page introduces the characters too:
notfound.wewe.jp/Profile.html

Can someone romanize the names of these girls please?
由紀乃　さゆり
１９歳やさしいお姉さん
松岡　聖音（きよね）
１８歳元気な女の子
春日　亜矢
１６歳ポーカーフェイスなメイド
杉野　御代
２０歳大人の女性なめがねメイド
久留美　繭
１４歳心身ともに子供なメイド
秋葉　葉子
１４歳繭の友達

yukino sayuri
19 sai yasashii o neesan
matsuoka kiyoshi oto ( ki yo ne )
18 sai genki na onnanoko
kasuga aya
16 sai pookaa feisu na meido
sugino miyo
20 sai otona no josei na megane meido
kuru yoshi mayu
14 sai shinshin tomo ni kodomo na meido
akiba youko
14 sai mayu no tomodachi

The list so far:

由紀乃　さゆり yukino sayuri (age 19, a gentle oneesan)
松岡　聖音 matsuoka kiyone (age 18, energetic girl)
春日　亜矢 kasuga aya (age 16, poker-faced maid)
杉野　御代 sugino miyo (age 20, maid with glasses, a mature woman)
久留美　繭 kurumi mayu (age 14, maid with the mind and body of a child)
秋葉　葉子 akiba youko (age 14, mayu's friend)

Any corrections? All the given names are okay, they match the gallery filenames.

Thanks, guys.