Slavs
Standardised Slavic languages that have official status in at least one country are: Belarusian, Bosnian, Bulgarian, Croatian, Czech, Macedonian, Montenegrin, Polish, Russian, Serbian, Slovak, Slovene, and Ukrainian.
Genetic studies on Croats
According to 2014 autosomal analysis of Western Balkan, the Croatian population shows genetic uniformity with other South Slavic populations. The Croatians and Bosnians were more close to East European populations and largely overlapped with Hungarians from Central Europe. In the 2015 analysis, they formed a western South Slavic cluster with the Bosnians and Slovenians in comparison to eastern cluster formed by Macedonians and Bulgarians with Serbians in the middle. The western cluster has an inclination toward Hungarians, Czechs, and Slovaks, while the eastern cluster toward Romanians and some extent Greeks. In the 2018 analysis of Slovenian population, the Croatian population again clustered with Slovenians, Hungarians and was close to Czech. The population of Croatia mostly shares common ancestry with Eastern, Western, and Southern Europeans, and has almost no relation to isolated Sardinian and Basque population.