#1 (Wikipedia)
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#2 (Copy-paste I wrote a few months ago to paste during a Discord conversation; extracted from Reddit)
I don't think it really was intentional to count the two together, but most speakers of Brahui just choose Balochi as their mother tongue when they don't have "Brahui" labeled as a separate option. This is because most speakers of Brahui learn Balochi as they're growing up alongside Brahui and feel equally confident speaking in both, many speakers of Brahui ethnically identify as Baloch, and it seems that nearly all speakers of Brahui are confident and equally comfortable speaking both Brahui and Balochi.
Source #1 Source #2 Source #3 Source #4
In the 1998 census, the form only listed seven options for people to choose as their mother tongue (Punjabi, Pashto, Sindhi, Saraiki, Balochi, Urdu, and Other), and in this case, rather than choosing "Other", most speakers of Brahui chose Balochi. In the 2017 census, though, Brahui was listed as a separate language, and it seems that Brahui speakers chose their own language as their mother tongue when it was listed.
This can be deduced by the language results found out in the 2017 census, which we have province-wise distributions of. In 1998, about 55% of the population of Balochistan claimed "Balochi" as their mother tongue. In 2017, though, only 35.49% of the population of Balochistan claimed "Balochi" as their mother tongue. While this is perplexing at first, it makes more sense after you consider that, in 2017, 17.12% of the population of Balochistan also claimed "Brahui", which wasn't an option on the census in 1998, and it likely isn't a coincidence that 17.12 + 35.49 = 52.61, which is pretty close to the 1998 Balochi figure of 55%. This shows that it's extremely likely that most Brahui speakers chose Balochi as their mother tongue in 1998.
TL;DR: Brahui speakers choose Balochi as their mother tongue when they aren't given the option of Brahui.
#3 (Wikipedia)
Starr County is also nearly unanimously Hispanic, with 97.7% of the population of the county identifying as such. This makes Starr [[list of Majority-Hispanic or Latino Counties in the U.S.|the county with the highest proportion of Hispanic people in the continental United States]].
Windows Key + V Masterrace Anyone?