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wait are u saying J1, J2, and e1b1b came to italy in neloithic i dont thing there is any good evidence for that the fact the J1, j2, and eb1b1 and centered in greece and italy show it is from greco roman times and that greeks and italiens have extremly high amounts of mid eastern in austomnal DNA tests and that J1, J2, and E1b1b are popular in teh same areas of europe tehy probably came in the greco roman age
when u said I2a1 is estimated as 20,000 years old and I2a1 and I2a1b quickley split that is more like what i was excepting because i had heard estimates for I2a1a m26 at only 8,000 years old that did not make sense to me because we have two 5,000 year old m26 samples in France and it seems i2a1 was already spread out in all of western Europe(except Germany, Britian, Ireland) before the Neolithic age then g2a invaded I2a1a about 10,000-6,000ybp so I2a1a and I2a1b may have split almost 20,000 years ago that means I2a1a may have been dominte in western Europe 15,000ybp same with I2a1b in eastern Europe
I think the Y DNA for europe 10,000- 15,000ybp for France, Spain, and Italy mainly I2a1a with possibly a little I1a1, I1a3, I1a4, and I1b, and some I2a2. for central Europe maybe also britian mainly I1a1, I1a3, I1a4, and I1b, or posibly I2a2 was the main group and then also a little I2a1a, for all of eastern Europe mainly I2a1b, with some I1a1, I1a3, I1a4, and I1b, for Scandinavia just about only I1a2 and some I1a. I have heard about C7 and F 96 in Europe being from the first settlement over 50,000 years ago but what if F 96 is not just found in Europe and maybe it came in the Neolithic age i think that F that was negative for all of F;s descendants in LBK Germany 7,000ybp is evidence it came in Neolithic maybe C7 is if it is old enough and if it is just foudn in Europe maybe C7 and F 96 did exist but i doubt they where that popular
and Y DNA subclades did not complete settle Europe till only 15,000ybp and since there is a good chance I* originated around Caucus and the Iraq just 30,000-40,000ybp maybe the I people had a last glacial refuge and then resettled Europe but if I originated in Europe then u can say they came to Europe as far back as 45,000-50,000ybp
also modern Italien people in globe13 austomnal DNA if u take away the 20.5% west asian, 14.3% southwest asian they would probably have over 50% Mediterranean like Iberian do Italians i think are mainly descended from Neolithic Europeans like Otzie we are lucky Sardinia people exist because they literally are Neolithic western Europeans that is why they have 70% med they are probably what Italians where till the R1b S28 Italic speakers invasion which brought more north European and inter marriage with mid easterns and north Africans in greco roman age since the original European austomnal DNA group most tests call it north European was so unpopular in austomnal DNA we have of Neolithic farmers in Europe i think the G2a austomnal DNA med farmers did not peacefully spread farming they nearly killed off the Y DNA I and austomnal DNA north Euro hunter gathers and Itlaiens, Iberian, and sardines are a direct result of that