Which country has the most diverse origin?

[Kyp]

Which old world country has the most diverse pool on YDNA lineages?

I think Turkey and Iran could be candidates as they both don't have a single basic YDNA lineage exceeding 25%. Probably due to the countries lying on important human migration routes

Are there more extreme cases?

[Jana]

Hungary comes to mind. Depending on study, their R1a and R1b is roughly equal (in some studies R1a is higher but in last one R1b even came first iirc).

In 2018 study Hungary had 21.2% R1a and 21.3% R1b


Greeks, Bulgarians, Slovenians Romanians also have pretty diverse/balanced Ydna.

[Malagueña]

Clearly Hungary takes the cake

[Hektor12]

Greek %10 J1 wadu hek ? Greek are really arab ??

[Jana]

Greek %10 J1 wadu hek ? Greek are really arab ??

That's just one study, in others it's lower. Anyway, majority of J1 in Europe is not connected to Arabs. Subclades matter.
J1 was found in Karelian EHG for example.

[Ülev]

Vatican City

[Malagueña]

Vatican City

It's funny because it really is

[gixajo]

Greek %10 J1 wadu hek ? Greek are really arab ??

No, these data is about Greeek people(with 3 e) and not about Greek (2 e).

[Synapsid]

That's just one study, in others it's lower. Anyway, majority of J1 in Europe is not connected to Arabs. Subclades matter.
J1 was found in Karelian EHG for example.

EHG had low level CHG. I think basal J* ultimately had it roots in the iranian plateau, in the Paleolithic and epi-paleolithic Zagros cultures
https://en.wikipedia.org/wiki/Zarzian_culture

[Rethel]

Anatolia.