Mitanni at Hasanlu - Did they have Sintashta ancestry or not?

I want to make a quick post on a new article by Nezih Seven. You can find it here.

A Genetic Analysis of Historical Population Movements Around The Zagros Mountains

He analyzed the NW Iranian samples from the 'Southern Arc' paper and reached some interesting conclusions.

Model for Hasanlu_LBA_A by Nezih

The p-value of the above model is ~0.20 (therefore passing as p>0.05). His qpAdm output file can be seen here. 

Armenia vs NW Iran - Two different short stories

 The Armenian Data from the new papers

1. Some EHG ancestry from north of caucasus is seen at Areni Cave, 4200BCE.

2. EHG dilutes by the time of Kura Araxes 3600-2000BCE, Arm_EBA (green below).

3. Arm_MBA/LBA/IA cluster clearly shifts towards steppe, with lots of R1b & I2 Y hg. According to Lazaridis et al, this explains the Armenian language branch. For now I will accept this conclusion as it makes sense, and explains the different language of NW Iran.

4. Post IA, intense mixing with more southwestern populations (but not NW Iran) so much so that all steppe autosomal ancestry gets diluted.

PCA - Ancient & Modern Armenia

The Southern Arc paper and it's data upends the Steppe Theory in multiple ways

Lazaridis, Iosif, et al. “The Genetic History of the Southern Arc: A Bridge between West Asia and Europe.” Science, vol. 377, no. 6609, 2022, https://doi.org/10.1126/science.abm4247.

This is a recently published paper ('the paper', 'this paper') with many new samples from what the authors call 'The Southern Arc'. The authors define it as 'a region centred on the large Anatolian peninsula (Turkey), including in the west (in Europe) the Balkans and the Aegean, and in the south and east, Cyprus, Mesopotamia, the Levant, Armenia, Azerbaijan, and Iran.'

The main conclusion of this paper which upends one part of the Steppe theory is that West Asia is now considered to be the homeland of the first Indo-European speakers, and the steppe to be only a secondary homeland. From the paper: