Flawed data as Galatians and Cappadocians are not more here; there were locals speaking indigenous languages, you can check up the Pontic region per example, taken by the Turks late: there the Greeks were city dwellers and the Lazi were living in the countryside.
There is this interesting article from this greek website regarding the inhabitatns of Asia Minor. I will post some parts from this article:
http://www.freeinquiry.gr/pro.php?id=2793&PHPSESSID=1a2502900037c680062f04c9715f5254
The formal education of the current Greek state presents a warped image of Asia Minor, in which the region everything was supposedly Greek and those who were/are "barbarians" invaded it, and were sooner or later 'inoculated with the Greek culture' and Hellenized.
So, in the current residents of Greece of Asiatic origin (Pontians) has created the illusion that they are genuine descendants of the ancient Greeks. Present inhabitants of Greece from Asia Minor, however, originate from a medley of Asian tribes who lived in region over the centuries. The connecting links which unite them with the other inhabitants of Greece (eg. Vlachs, Albanians, Slavs), is the common Orthodox Christian faith and the use of Romaika language (Modern Greek), which were imposed during the Byzantine period several times by force. The refugees from Asia Minor to Greece and particularly to Macedonia, have no racial connection to the ancient Greek colonists (eg. ancient Greek colonists created Marseille, but today there are no claims that Marseille is Greek), but are a population medley of Georgians, Armenians, Seljuk, especially Laz, mixed with innumerable other natives.
Multinational Asia Minor in antiquity
The mixing of peoples and cultures, which has been in Asia Minor, the biggest crossroads of peoples on Earth, not the likes you have seen anywhere in the world. Nobody can say (with certainty) what peoples, what nations inhabited today's Asia Minor. Ancient peoples who lived in the area: Hittites, Phrygians, Mysians, Cimmerians, Bithynians, Cappadocians, Lydians, Pisidians, Lycaonians, Isaurians, Leleges, Carians, Lycians, Ionians, Aeolians, Galatians (divided into three tribes: Tectosages, Tolistobogii, Trocmi) etc.. dividing Ancient Greeks in Asia Minor (not called so at the time, this name appeared after the fourth to fifth century AD) in 15 countries, bringing mostly the names of the people who lived in them, which was to the north: Pontus, Paphlagonia, Bithynia, west: Mysia, Lydia, Caria to the south: Lycia, Pisidia, Pamphilia, Cilicia and middle: Phrygian Isauria, Lycaonia, Galatia and Cappadocia. Galatia, for example, was a country already in the third century BC, which was inhabited by Celtic tribes. Later became a Roman province. The residents were addressed in the "letter to the Galatians" of the Apostle Paul.
Multinational Asia Minor
and the Byzantine and Ottoman period
Something similar happened during the later Byzantine period, when the territories of Asia Minor were organized into: East, Armeniakon Thrakesion, Opsikion, Optimatou, Boukellarion, Paphlagonia, Chaldia, Koloneia, Sebasteia, Lykandou, Seleukeia, Kibyrrhaiotai, Cyprus, Samos (included and Smyrna) and Aegean (islands). Backed by professional military forces, composed of Armenians, Syrians, etc. locals. At plateau, the origin of the inhabitants were Armenian, Syrian or mixed. Following the 7th century. A.D. appeared Arabs, who came up and Istanbul, while, as we will examine in more detail below, were too extensive Slavic settlements to meet population gaps due to wars and plagues. During the 11th century invaded Mongolia, which prevailed under the leadership of Selcuk. After the decline of the rule of Selcuk, Ottoman Turks appeared (osmanli), who in 1453 conquered Constantinople. Later, Anatolia was divided into vilayets of the Ottoman Empire.
Here I must make a note: The name Turks is derived from Turany, who lived in Central Asia. Kemal Ataturk was the one that imposed by law, the common name for all Turkish residents of the country in which they live hundreds of different tribes. To say that today's Turkey, they are "pure Turkish" is a phenomenon that is related to our claim that we are "pure Greeks". The more bastard you are, the more insistently seeks blood purity. In this article, the term "Turkish" is used conventionally with more geographical, ethnological despite complexion. then invaded Asia Minor, found established various peoples of Turkish origin, such as Turkmen, who had come from Central Asia. Different ethnos are Laz... Other Asia Minor, but non-Turkish races are Circassians or Circassians, the Iberians (Georgians), Kurds, Roma, Armenians, Jews and others.
[FONT=Verdana, Arial, Helvetica, sans-serif]Asia Minor[/FONT] [FONT=Verdana, Arial, Helvetica, sans-serif]
[/FONT] [FONT=Verdana, Arial, Helvetica, sans-serif]in the 12th century.[/FONT] [FONT=Verdana, Arial, Helvetica, sans-serif]A.D.
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The Multinational Seacoast
For many indigenous peoples provide information Xenophon, Herodotus, Strabo, Diodorus and others.
Persian kingdom of Pontus
The Kingdom of Pontus (northern coastal part of the Asia Minor peninsula), which the Greeks 'claim', is actually the kingdom of the Persian king Mithridates, which was abolished by the Romans. Had nothing to do with Greeks. The population was in the majority of non-Greek origin. Composed of different tribes, speaking 22 languages. The Romans succeeded in breaking it after long struggles and turned it into a province of the Roman Empire. Gradually, all parts of Pontus were annexed to the Roman Empire. The Christianization of the people started in the 3rd century.
The Byzantine Seacoast
The period of Roman occupation and the prevalence of Christianity marked the loss of the name "Greek (Hellene)" -which, moreover, in some cases, had acquired religious significance stating the Pagan-and while prevalence of the name "Roman" survives to this day. During the Byzantine period principal people of the region were the Laz, who belong to the same race of Iberian Caucasus. The Laz were Christianized by Justinian (6th century)., like the tribes of Colchians, and Tzanata. Population decimation and Significant losses due to epidemics, such as p, x, the great plague of 541/542. Syklonisan pestilence empire and other times, as in 558, the 560/1, the 585, the 602, 746-747 etc.. According to calculations, the loss rate of the famine reaches 40% in Asia Minor.
Important ethnographic changes
during the Byzantine period
The largest ethnographic changes suffered Byzantium was after the sixth century, when it became a massive installation of the Balkan Slavs. At the same time, the Arabs made frequent attacks in Asia Minor and not a couple of times, but almost every year for about two hundred years. Several raids reached as the Black Sea, the Aegean, and even Konstantinopol. Whenever invasion was made, killing, looting and taking captives into slavery followed, while the Byzantines/Romans were burning their crops, to deprive the enemy of supplies. Many cities of Asia Minor were entirely destroyed, depopulated, and abandoned. The same applies to the Aegean. Many islands had already been ravaged/depopulated by the middle of the seventh century, when Arab fleet began to dominate the eastern Mediterranean (the conquest of Crete (823-828)).
It is not difficult to imagine the consequences of this long process: a large part of Asia Minor had been destroyed and had reduced the population irreparably. He had created a huge demographic gap. Reduced populations indicates the settlement policy of the emperors. Various populations and tribes are used on a large scale for the implementation of this policy (Armenians, Syrians, Slavs, Bulgarians, etc). Farmers and soldiers were urgently needed . The Constans II (7th century). Slavs moved to Asia Minor in LARGE numbers. Justinian II moved a big number of Slavs to Bithynia. First was unlucky, because most of them deserted to the enemy, causing the emperor to impose harsh reprisals to their families. (Epiphany: "Diary", ed C. de Boor, Leipzig, 1883, pp. 365). However, we learn that 208,000 Slavs migrated to Bithynia at will during the decade of 760. (Nikephoros Patriarch: "Short History", ed C. de Boor, Leipzig, 1880, pp. 68-9). In the 8th century Syrians settled in Thrace.
Among the new settlers, the most important were the Armenians; flow into the empire lasted many centuries. Many settled in Cappadocia and in other parts of eastern Asia Minor, many in Thrace, others in the region of Pergamon. In 578, 10,000 Armenians moved to Cyprus for colonization, given that the island was almost deserted at this time. ("History of the Greek nation," ed "Publishing Athens", Vol. H, pp. 183-4).
Multilingualism in Asia Minor
There were two official languages spoken in the eastern and western Roman empire: Greek and Latin. The boundaries of each spread is not always clear. In general, however, with the exception of the Balkans, where there was a lot of language mixing, the western part of the empire used exclusively Latin and eastern exclusively Greek, MEANING that these were the languages of administration and educated people. Almost all educated in the West spoke Latin, but a large part of ordinary people do not even speak one or the other language. Constantinople, founded as Latin center in the East, like all capitals, was a melting pot of disparate elements. Among its inhabitants were Illyrians, Italians, Africans, whose native language was Latin, eg even of the Emperor Justinian. Any provincials had settled there and shuttled to commercial or government affairs. Among the many slaves were barbarians. Included many foreign and military units, from the 6th century consisted of either Germans or Huns and others from some of the most hardened provinces, as were the Isaurians, the Illyrians and Thracians. Syrians, Mesopotamians and Egyptians monks, who spoke little or no Greek, flocked to the capital impressing the locals with strange feats of asceticism. The ubiquitous Jews earn their living as craftsmen or merchants.
The common Alexandrian, that a simplified form of ancient Greek language at all levels (phonetics / pronunciation, grammar, syntax, vocabulary), was built by the scholars of Alexandria for the bureaucratic needs of non-Greek sages and scholars. Was then introduced lowercase letters and multitone to pronounce and emphasize each word correctly and facilitate to non-Greeks. Christians found ready this International language, 'English' of the time, and made it their own. Note, that the common Alexandrian not spoken by mainly Greek but non Greek-speaking peoples (Jews, Syrians, Persians, etc.). Evolution of the language adopted and used in territory of Greece (that is by Slavs, Albanians, Vlachs etc.).
The current Greek, Romeiko, to be precise, is a variation of the Alexandrian (the language of the Gospels, the Fathers of the Church, the hymnology) and not of the primarily Greek of ancient Greeks. 
