Just an idea, here is a good etymology site: http://www.behindthename.com .

Soni is just a different spelling of Sunny that I made up. Spanky, Feesh, Squeesh, Toad, and Chocky are all made up or are a tribute.

ISIS
Gender: Feminine
Usage: Egyptian Mythology (Hellenized)
Pronounced: IE-sis (English) [key]

Greek form of Egyptian Aset, which possibly means "the throne". In Egyptian mythology Isis was the goddess of the sky and nature, the wife of Osiris and the mother of Horus. She was often depicted having the horns of a cow on her head.
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BIJOU
Gender: Feminine
Usage: English
Means "jewel" in French.
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Rota is one of the names of Odins original valkyries.