Swahili language
The exact number of Swahili speakers, be it native or second-language speakers, is unknown and a matter of debate. Various estimates have been put forward and they vary widely, from 50 million to over 100 million. Swahili serves as a national language of four nations: Tanzania, Kenya, Uganda, and the DRC. Shikomor, the official language in Comoros and also spoken in Mayotte (), is related to Swahili. Swahili is also one of the working languages of the African Union and officially recognised as a lingua franca of the East African Community. South Africa legalized the teaching of Swahili in South African schools as an optional subject beginning in 2020.
Chamling language
Despite its geographic prevalence, the actual number of Chamling speakers is estimated to be 10,000, spread across small tribes and villages. Many members of the Chamling ethnic and tribal communities are no longer fluent in the Chamling language, which is taught only in remote areas in the Udayapur District. Like Bantawa, Chamling is an endangered language. Many people in these areas speak a variety of Chamling that is mixed with the Nepali language, which is the official language of Nepal. Most Chamling-speaking people are Hindus or practitioners of Kiranti Mundhum.