It’s not just the Marathon sample. Also the ancient inhabitants of Thessaloniki seem to have more Anatolian input. Hellenistic Greeks seem to be more Western Anatolian than Mycenaeans. They also may have more Steppe ancestry. Yet, these results have not been published yet and are just assumptions.
I personally wonder if Dorians had a decent amount of recent West Anatolian admixture.
In order to have a good estimation of admixture throughout the ages, we should compare specimens from each region to modern individuals from the same area.
It is quite remarkable that already we have evidence that some Eastern Greek islanders today are identical to the Ionian Greeks of antiquity.
I would certainly like to see some 50 specimens of Hellenistic mainland Greece. North to South. Then we can make some assumptions. As for the Slavs, we would need samples from 5th century mainland Greek specimens to compare.
One way or the other, Thucydides mentioned lots of population movement until after the Trojan War. Writing was not just suddenly forgotten without ANY sort of genetic impact.
The Archaic era sample from Kastrouli, near Delphous, is modelled like Mycenaeans and Empuries classic era Greek.
We always see the Aegean + Sardinian combination which indicates ancient Greeks were plotting western of Anatolians and southern of Thracians which makes perfect sense.
It worth to mention that ancient people of Phocis was mostly of Dorian descent.
[TABLE=collapse]
[TR]
[TH]Distance to:[/TH]
[TH]Greece_Delphi_IA[/TH]
[/TR]
[TR]
[TD]0.04085764[/TD]
[TD]67.60% Greek_Cyclades_Amorgos + 32.40% Sardinian[/TD]
[/TR]
[TR]
[TD]0.04201002[/TD]
[TD]59.80% Cypriot + 40.20% Sardinian[/TD]
[/TR]
[TR]
[TD]0.04202141[/TD]
[TD]65.80% Greek_Kos + 34.20% Sardinian[/TD]
[/TR]
[TR]
[TD]0.04368092[/TD]
[TD]62.80% Greek_Dodecanese_Rhodes + 37.20% Sardinian[/TD]
[/TR]
[TR]
[TD]0.04384377[/TD]
[TD]53.80% Greek_Central_Anatolia + 46.20% Sardinian[/TD]
[/TR]
[TR]
[TD]0.04397250[/TD]
[TD]64.00% Greek_Dodecanese + 36.00% Sardinian[/TD]
[/TR]
[TR]
[TD]0.04427015[/TD]
[TD]67.20% Greek_Crete_Lasithi + 32.80% Sardinian[/TD]
[/TR]
[TR]
[TD]0.04509915[/TD]
[TD]69.20% Greek_Cyclades_Tinos + 30.80% Sardinian[/TD]
[/TR]
[TR]
[TD]0.04512205[/TD]
[TD]71.20% Greek_Deep_Mani + 28.80% Sardinian[/TD]
[/TR]
[TR]
[TD]0.04514936[/TD]
[TD]43.20% Armenian_Gurin + 56.80% Sardinian[/TD]
[/TR]
[TR]
[TD]0.04552027[/TD]
[TD]42.60% Georgian_Meskheti + 57.40% Sardinian[/TD]
[/TR]
[TR]
[TD]0.04591606[/TD]
[TD]64.80% Greek_Crete + 35.20% Sardinian[/TD]
[/TR]
[TR]
[TD]0.04594109[/TD]
[TD]44.80% Armenian_Aintab + 55.20% Sardinian[/TD]
[/TR]
[TR]
[TD]0.04614685[/TD]
[TD]73.00% Greek_Apulia + 27.00% Sardinian[/TD]
[/TR]
[TR]
[TD]0.04614934[/TD]
[TD]49.40% Druze + 50.60% Sardinian[/TD]
[/TR]
[TR]
[TD]0.04620949[/TD]
[TD]51.00% Greek_Cappadocia + 49.00% Sardinian[/TD]
[/TR]
[TR]
[TD]0.04633631[/TD]
[TD]48.20% Palestinian_Beit_Sahour + 51.80% Sardinian[/TD]
[/TR]
[TR]
[TD]0.04643722[/TD]
[TD]73.80% Italian_Campania + 26.20% Sardinian[/TD]
[/TR]
[TR]
[TD]0.04662063[/TD]
[TD]43.80% Armenian_Urfa + 56.20% Sardinian[/TD]
[/TR]
[TR]
[TD]0.04705824[/TD]
[TD]48.00% Lebanese_Druze + 52.00% Sardinian[/TD]
[/TR]
[TR]
[TD]0.04708366[/TD]
[TD]43.20% Armenian_Ararat + 56.80% Sardinian[/TD]
[/TR]
[TR]
[TD]0.04725628[/TD]
[TD]49.40% Lebanese_Christian + 50.60% Sardinian[/TD]
[/TR]
[TR]
[TD]0.04726178[/TD]
[TD]72.40% Italian_Calabria + 27.60% Sardinian[/TD]
[/TR]
[TR]
[TD]0.04733834[/TD]
[TD]42.80% Armenian_Erzurum + 57.20% Sardinian[/TD]
[/TR]
[TR]
[TD]0.04737608[/TD]
[TD]72.80% Italian_Basilicata + 27.20% Sardinian[/TD]
[/TR]
[/TABLE]
[TABLE=collapse]
[TR]
[TH]Distance to:[/TH]
[TH]Greece_Delphi_IA[/TH]
[/TR]
[TR]
[TD]0.03338102[/TD]
[TD]Greece_BA_Mycenaean[/TD]
[/TR]
[TR]
[TD]0.03419978[/TD]
[TD]Spain_Greek_oAegean[/TD]
[/TR]
[TR]
[TD]0.03437974[/TD]
[TD]Greece_Delphi_BA_Mycenaean[/TD]
[/TR]
[TR]
[TD]0.03708950[/TD]
[TD]Hungary_Transtisza_Maros_EAvar[/TD]
[/TR]
[TR]
[TD]0.04247626[/TD]
[TD]Bulgaria_IA[/TD]
[/TR]
[TR]
[TD]0.04362731[/TD]
[TD]Bulgaria_Krepost_N[/TD]
[/TR]
[TR]
[TD]0.04369364[/TD]
[TD]Greece_Koufonisi_Cycladic_EBA.SG[/TD]
[/TR]
[TR]
[TD]0.04424304[/TD]
[TD]Turkey_MBA_o1[/TD]
[/TR]
[TR]
[TD]0.04485183[/TD]
[TD]Bulgaria_EIA[/TD]
[/TR]
[TR]
[TD]0.04570321[/TD]
[TD]Italy_Sardinia_IA_1[/TD]
[/TR]
[TR]
[TD]0.04613395[/TD]
[TD]Turkey_Archaic_SubGeometric[/TD]
[/TR]
[TR]
[TD]0.04665957[/TD]
[TD]Bulgaria_LateAntiquity[/TD]
[/TR]
[TR]
[TD]0.04751933[/TD]
[TD]Romania_C_Bodrogkeresztur_o1[/TD]
[/TR]
[TR]
[TD]0.04907960[/TD]
[TD]Israel_Ashkelon_IA1_o[/TD]
[/TR]
[TR]
[TD]0.05130562[/TD]
[TD]Italy_Bivio_Roman.SG[/TD]
[/TR]
[TR]
[TD]0.05149423[/TD]
[TD]Italy_IA_Republic_oEasternMediterranean.SG[/TD]
[/TR]
[TR]
[TD]0.05217388[/TD]
[TD]Italy_Ordona_Medieval.SG[/TD]
[/TR]
[TR]
[TD]0.05242016[/TD]
[TD]Croatia_Dragulin_Roman.SG[/TD]
[/TR]
[TR]
[TD]0.05258417[/TD]
[TD]Italy_LA.SG[/TD]
[/TR]
[TR]
[TD]0.05369149[/TD]
[TD]Serbia_Sirmium_Roman.SG[/TD]
[/TR]
[TR]
[TD]0.05390973[/TD]
[TD]Bulgaria_LIA[/TD]
[/TR]
[TR]
[TD]0.05394230[/TD]
[TD]Serbia_Naissus_LateAntiquity.SG[/TD]
[/TR]
[TR]
[TD]0.05407927[/TD]
[TD]Croatia_Velic_Roman.SG[/TD]
[/TR]
[TR]
[TD]0.05493432[/TD]
[TD]Turkey_Hellenistic_noUDG[/TD]
[/TR]
[TR]
[TD]0.05545972[/TD]
[TD]Italy_Imperial.SG[/TD]
[/TR]
[/TABLE]
Before Hellenistic era I don't expect to see a Western Anatolian-like profile dominant anywhere in mainland Greece (it possibly existed already in the eastern part of the Aegean).
It is during Hellenistic and Roman era when significant migrations took place that I expect to see a significant increase on CHG/Iran N components and in some cases some increase on Steppe (from peoples of Anatolia and south Balkans)