Languages with official status in India
Even though the English language is not included in the Eighth Schedule (as it is a foreign language), it is one of the official languages of the Union of India.
Of the 22 official languages, 15 are Indic, four are Dravidian, two are Tibeto-Burman, and one is Munda.
Indian Signing System
The Indian Signing System or Indian Sign System (ISS) is a convention for manually coded language used in India. It uses the words (signs) of Indian Sign Language with the word order and grammar of at least six official oral languages of India, including Hindi (Signed Hindi), Marathi (Signed Marathi), and Tamil (Signed Tamil).