Eira (2008:153-154) discusses the issue of establishing the language identity of the historical data assembled for the programs, much of which is identified by location rather than language name. For example, data being treated as Waywurru is variously labelled Pallanganmiddang, Upper Murray, Minubuddong, Kilure, Yackandandah, Wangaratta, Robertson, Andrews and Yackandandah Bank Museum. Data treated as Dhudhuroa is variously labelled Dhudhuroa and 'Barwidgee, from Wodonga along Upper Murray'. She points out that, 'given the likely reality of linguistic relationships prior to colonisation as well as the status of the 19th century records...similarities between the lists and dissimilarities between the groups are sufficient to assert a basic division into two language groups without controversy'.

Clark (2009) examines the literature on the language situation of the Omeo district of Victoria, sorting through the various analyses of groups and languages and the many name variations. He concludes that there were two languages in the area: Dhudhuroa and Yaithmathang S43, with Yaithmathang being a dialect of Ngarigu S46. He sets out the five groups associated with Dhudhuroa: Boengar-mittung, Djila-mittung, Ginning-mittung, Tarrer-mittung and Theddora-mittung; and the two groups associated with Yaithmathang: Kandangora-mittung and Yatte-mittung.

Mathews (1909, in Blake and Reid 2002:213) identifies Minyambuta S90 as a dialect of Dhudhuroa, though Clark (2005), following Blake and Reid (1999), treats it as a 'probable dialect' of Waywurru (Pallanganmiddang) S89, and Gardner (1997:9) says it is the name of a group, also known as the Mogullumbitch or Mokeallumbeets, who spoke the same language as the Gundungerre S43.

Mathews also says that the language of the Walgalu S47 'resembled partly the Dhudhuroa and partly the Dyirringan S51' (Mathews 1909:278).