Yup. The word for almost all peoples in their native language translates to some approximation of “The People,” with implications that all others aren’t really people.
Most Europeans, Iranians, Kurds, Afghans and Indians are Aryans, though Hitler would no doubt have balked at including many of these groups.
Notably all Slavs are perfectly good Aryans. Why the Nazis chose to exclude them makes even less logical sense than the rest of their racial doctrines.
My understanding of Nazi racial theory, admittedly third hand, is that the Nazis maintained that the original Aryans were blond, blue eyed peoples from Scandinavia. They were a warrior race who spread out and conquered all the lands now speaking Indo-European languages, but with time their blood became diluted with that of the lesser peoples they had conquered. The purest Aryan blood was to be found in the Nordic countries, the second purest in German and Dutch speaking countries, with the Anglo-Saxons admirable Aryans, though their blood had been diluted with French and Celtic.
This theory is not widely accepted today. The origins of Indo-European languages is generally believed to be central Asia, about seven thousand years ago. (IE languages do not have a common word for “sea” or “ocean”, so it is believed that they were landlocked, inland people.) The English word “yoke” is cognate with the Hindu word “yoga”, meaning discipline, which is evidence that they practiced agriculture. They also share the same names for numbers through one hundred, but not further, which seems to indicate that they had a base ten number system (though not numerals) and were familar with numbers through 100, but not above. All the IE languages share words for familial relationships, including very similar words for in-law in Sanskrit and German, for instance.