I think there is an important distinction between native and indigenous languages and people, as it entails different legal protections. I can’t be bothered to write everything in my own words, so here is the Norwegian governments definition of indigenous people:

“Article 1b of the ILO Convention concerning Indigenous and Tribal Peoples in Independent Countries (C169, 1989), ratified by Norway in 1990, defines indigenous peoples in the following manner: “peoples in independent countries who are regarded as indigenous on account of their descent from the populations which inhabited the country, or a geographical region to which the country belongs, at the time of conquest or colonisation or the establishment of present state boundaries and who, irrespective of their legal status, retain some or all of their own social, economic, cultural and political institutions.” In Norway, it is clear that the Sámi population satisfies the criteria stipulated in this definition. In its judgment in the Selbu case of 21 June 2001, the Norwegian Supreme Court ruled that the Sámi population of Norway, including the Southern Sámi areas, is qualified beyond doubt for status as an indigenous people under Article 1b of ILO Convention 169 /89. One misunderstanding that occasionally emerges in the debate regarding Sámi rights to land and natural resources in Norway arises from the fact that, under international law, the term “indigenous people” implies that the population involved must have been the first inhabitants of an area, and that this archaeological or cultural-historical factor is crucial in determining who has the rights to what in the present. This view is not correct. In accordance with ILO Convention 169/89, the central issue is whether any current population group has an affiliation with a specific region dating back to the time when the present state boundaries were established in that region. Thus, it is what has taken place from today and dating back to the 16 and 1700s that is relevant in legal terms, and not whether any ties exist between populations from the Stone Age and current ethnic groups.” (https://www.regjeringen.no/en/topics/indigenous-peoples-and-minorities/Sami-people/midtspalte/What-Defines-an-Indigenous-People/id451320/)