There is no 'most-well-known' by one artist. Though there is an exception, that being the conceptualization by artist Rimiko, the artist depicts VY1 as a 'female' with long pink and greenish hair who has green and pink stylized eyes. She wears kimono sleeves and a pleated skirt.
However, there are common appearances done by various artists, that being a black haired girl wearing a pink kimono and holding fans. It appears many try to keep her elements and design very Japanese.
But as intended by Yamaha, the VY series have no traits.