Check out his comments.
I'd have preferred to do this myself, but I just don't have time for anything at the moment. But Rocca's runs are plenty for some commentary, so I'll highlight some of his observations and add a few more with snips from his post.
The first thing he does is take the oldest, directly-dated Bell Beakers and sees what they prefer among Neolithic European populations. Makes sense. Here's a snip from the oldest Beaker, a Dutchman.
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>> Beaker_The_Netherlands:I5748
>> 2579–2233 calBCE (3945±55 BP, GrN-6650C)
>>> P312+
================================================== ====
[1] "distance%=2.2331"
CWC_Germany,70
France_MLN,11.4
CWC_Baltic_early,6.8
Yamnaya_Kalmykia,3.8
Yamnaya_Samara,3
Ukraine_Mesolithic,2.6
CWC_Baltic,1.4
Samara_Eneolithic,1
Beaker_Iberia,0
Remedello_BA,0
Comment #1. You can see that like almost all Bell Beakers, the Dutchman has a very strong affinity for the Corded Ware people, either the German CWC or the Baltic CWC in various proportions. Except in the Dutchman's case using this measure, it is a whopping 80%.
What you see in these Beakers and other runs are digits for Comb Ware, GAC, Narva or Sweden MN. This is unquestionably NE European influence coming very directly from the Corded Ware Cultures. The expansion of CWC in Europe was probably multi-polar, fluid and web-like, so the differences in digits among individuals might reflect the personal genealogies of particular wagon bands. (being more or less of Swedish Battle Axe, Moravian, Dutch Single Grave, Baltic, etc, etc.)
Culturally this makes a lot of sense to me. Phenotypically it makes sense. The very first Mittle-Saale Beaker made sense as being half local CWC and something else.
It's not lost on me that there is a significant presence of R1b in the Narva Baltic where the CWC intruded, but that's a lot late and apparently the wrong stuff, plus we'd be looking at huge chunks of Narva (not the case).
Next, a Z2103 Malopolskan.
Comment #2. Rocca notes that this Beaker is interesting in that he has a respectable chunk of Vucedol ancestry that his clan and most non-Iberian Beakers lack entirely. I'm either right or wrong about this (I don't care in the slightest), but I'm pretty sure that a few individuals in Csepel Island, and by extension the Malopolskan region, have direct Yamnaya influence from the Tisza River region and south of this. In fact, there's cultural influence to suggest this scenario.
I'm not denying the relatedness of the Yamnaya and Beaker Y-chromosomes. Instead I'm just pointing out that it just ain't that simple, people. Yes, I'm suggesting Bell Beakers and Yamnaya mixed within an erogenous zone. [cymbal shot] I mean contact zone.
Now the Italian
Comment #3. None of the Continental Beakers like them some Remedello, not even the Italian. But Remedello, Vucedol and SW Iberia seem to have something together not insignificant. He asks if this is the Stelae Road. Some-'ems up, don't know what.
Comment #4 Clearly, Bell Beakers are poking all around at low levels in the Yamnayo-sphere. What I've seen here and in other runs is something that splits between Kalmykia and Bulgaria. If we go back to the Dutch Beaker at the top of the page, there isn't a whole lot of clutter. Basically we have a fairly clean ancestry of 80% Corded Ware 10% France MN/LN and 10% Yamnaya.
I5748 is early enough and clean enough that he could probably tell you about his great-grandparents on his mom and dad's sides. Would he tell you that his father's side were full-blooded Yamnaya immigrants or is this an indication that we should be more careful in examining early steppe influence in NE France and Germany?
If you got runs, by all means post them.
Update
Thanks to R. Rocca for posting these at Anthrogenica, I'll put up Alberto's next, then Andrew K's.
What you see in these Beakers and other runs are digits for Comb Ware, GAC, Narva or Sweden MN. This is unquestionably NE European influence coming very directly from the Corded Ware Cultures. The expansion of CWC in Europe was probably multi-polar, fluid and web-like, so the differences in digits among individuals might reflect the personal genealogies of particular wagon bands. (being more or less of Swedish Battle Axe, Moravian, Dutch Single Grave, Baltic, etc, etc.)
Culturally this makes a lot of sense to me. Phenotypically it makes sense. The very first Mittle-Saale Beaker made sense as being half local CWC and something else.
It's not lost on me that there is a significant presence of R1b in the Narva Baltic where the CWC intruded, but that's a lot late and apparently the wrong stuff, plus we'd be looking at huge chunks of Narva (not the case).
Next, a Z2103 Malopolskan.
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>> Beaker_Poland:I4253
>> Z2103+
>> 2456–2207 calBCE (3850±20 BP, PSUAMS-2339)
================================================== ====
[1] "distance%=2.2247"
CWC_Germany,44.4
Yamnaya_Ukraine,14.2
Vucedol,11.1
Portugal_MN,10.1
Yamnaya_Bulgaria,10.1
Iberia_Southwest_CA,6.6
Blatterhole_MN,1.6
Armenia_ChL,1.4
Poltavka,0.5
Comment #2. Rocca notes that this Beaker is interesting in that he has a respectable chunk of Vucedol ancestry that his clan and most non-Iberian Beakers lack entirely. I'm either right or wrong about this (I don't care in the slightest), but I'm pretty sure that a few individuals in Csepel Island, and by extension the Malopolskan region, have direct Yamnaya influence from the Tisza River region and south of this. In fact, there's cultural influence to suggest this scenario.
I'm not denying the relatedness of the Yamnaya and Beaker Y-chromosomes. Instead I'm just pointing out that it just ain't that simple, people. Yes, I'm suggesting Bell Beakers and Yamnaya mixed within an erogenous zone. [cymbal shot] I mean contact zone.
Now the Italian
================================================== ====
>> Beaker_Northern_Italy:I2478
>> P312+
>> 2194–1939 calBCE (3671±40 BP, LTL-5035A)
================================================== ====
[1] "distance%=2.6952"
CWC_Germany,38.7
Iberia_Southwest_CA,35.4
Czech_MN,14.3
Yamnaya_Bulgaria,7.3
Armenia_ChL,4.3
Beaker_Iberia,0
Remedello_BA,0
Comment #3. None of the Continental Beakers like them some Remedello, not even the Italian. But Remedello, Vucedol and SW Iberia seem to have something together not insignificant. He asks if this is the Stelae Road. Some-'ems up, don't know what.
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>> Remedello:RISE489
>> I2a-M26
>> 2908-2578 calBCE (4185±70 BP, ETH-12188)
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[1] "distance%=2.3032"
Spain_LNCA,29.5
Koros_EN,17.1
Czech_MN,14.6
Iberia_Southwest_CA,14.5
Tisza_LN,11.5
Vucedol,8.2
Iberia_Central_CA,4.6
================================================== ====
>> Vucedol:I3499
>> 2884-2666 calBCE (4176±28 BP, BRAMS-1304)
>> R1b1a1a2a2-Z2103
================================================== ====
[1] "distance%=2.2451"
Remedello_BA,31.4
Yamnaya_Kalmykia,27.6
Anatolia_ChL,25.4
Tisza_LN,15
Levant_N,0.6
================================================== ====
>> Iberia_SW_Chalcolithic:I6601
>> 2800–2600 BCE (No radiocarbon dates, but only Copper Age Portugese sample)
>> I2
================================================== ====
[1] "distance%=3.2808"
Iberia_ChL,50
Portugal_MN,21.2
Remedello_BA,18.6
Czech_MN,7.9
Tisza_LN,2.3
I5748 is early enough and clean enough that he could probably tell you about his great-grandparents on his mom and dad's sides. Would he tell you that his father's side were full-blooded Yamnaya immigrants or is this an indication that we should be more careful in examining early steppe influence in NE France and Germany?
If you got runs, by all means post them.
Update
Thanks to R. Rocca for posting these at Anthrogenica, I'll put up Alberto's next, then Andrew K's.