Thanks for your feedback. Actually I updated all the maps except the the two first with the Kunda and Narva cultures, which I had updated in late 2016 (as mentioned in the bottom right corner). I didn't have the data from the 2017 study on the Baltics at the time. I will update it today.
I used the term Kiukainen culture broadly for the East Baltic cultures of the period as I couldn't find the names of contemporary cultures in Estonia, Latvia and Lithuania. Perhaps you can help me on that?
I think there is not good umbrella term for Baltics plus South Finland those days.
If the timeline is 2000-1500 BCE, then it is still the Battle Axe culture or post-Battle Axe cultures if you wish. And it was very R1a. And very steppe (EHG - CHG mix).
The N1c most likely spread with Net Ceramics (Textile, or Fake Textile Ceramics) after 1,500 BCE.
http://www.sarks.fi/fa/PDF/FA13_51.pdf
"According to the summarized data of several researchers,archaeological cultures with net potteryemerged approximately as follows. During the secondhalf of the second millennium BC the
BronzeAge culture of Net Ware formed in an areabounded by the Upper Volga in the south, LakeOnega in the north, the upper reaches of the RiverSukhona in the east and in the west by the area tothe southeast of Lake Ladoga and possibly as far asthe River Volkhov. Later,
during the first half ofthe first millennium BC, it spread over a wide area,extending to the coasts of the Baltic and the WhiteSea, along the middle reacp.ers of the Volga to themouth of the River Kama, and to a lesser extentsouthwards to the basin of the River Kama (Fig. 1)."
But also that is a bit interesting because:
"From the
middle to the second half of thefirst millennium BC it ceased to exist independentlyand
merged with a new wave of Early IronAge culture of the so-called Ananyino type thatspread over the vast territories of the forest zone tothe north of the Volga between the Ural Mountainsand the Baltic Sea"
So, it is not clear which wave brought N, maybe both brought different subbranches of N into Baltics.
What we know is Kivutkalns samples from Riga (from 730-230 BCE) were all R1a. And that in the latest dates (decline of) Kivutkalns appeared both iron working, and also some Ananyino type artifact(s). Most likely that is where N1c arrived into Baltics for good. But that is of course speculations.
The lack of N in aDNA in Baltics however is evident, most likely it nevertheless was near. Somewhere North of Srubna and/or North of Trzciniec.
So, for current understanding I would draw it like this:
Cut Western half of "Kiukainen" and name it post-Battle-Axe cultures (make it R1a). And merge Eastern part with light blue, cut 1/3 of Northern Srubna make it light blue too. And tentatively assign N1c? and R1a? to them, because those parts most likely was a mix of Uralic/IE folks, but my knowledge does not go that far to tell exactly where to draw the line
and at which point what was IE became Uralic.