Which is the youngest Dravidian language?

 There are about 22 Dravidian languages.

Badaga, Brahui, Gondi, Jatapu, Kannada, Kodava, Kolam, Konda, Koya, Kurukh,Malayalam, Mukha Dora, Sankethi, Savara, Sunuwar, Suriyani Malayalam, Tamil,Telugu, Toda, Tulu, Yerukula

We cannot tell any language as the youngest. Some of the languages are spoken by tribes which we may think as the youngest, but its origins are unknown.

1.Suppose if I Put a native speakers of about 4 lakh, Badaga is one such language, spoken in Nilgiris in Tamil Nadu. It is closely related to Kannada. In 2009 only, new alphabets are deivsed to write it. Toda, another languages is also spoken in the same area by a community of 1600 native speakers.

2.Another mystic language is Yerukula, spoken in Andhra, with a native speakers of over 70000 (larger than Sanskrit) more distantly related to Tamil. Mastery over this language gives one the ability to tell fortunes and the most of the fortune tellers are Women of Kurrus. Can we say this as a Mystic Women’s language?