Basal Eurasian discussion

[TanTin]

To me it feels like the idea of Basal was built on the assumption that the Out of Africa was Y-haplogroup CT and E is native to the Middle East and represents this basal population. Then we got the Iberomaurusians and it looks more like E is just a recent migration and the basal signal is mostly caused by just this Iberomaurusian admixture and the erronous models based on it.
But the idea of Basal sticked around for some reason and everyone keeps choosing their own population to call Basal Eurasian (some have even chosen ANE, believe it or not ).
If it's really from a population earlier than the main OoA wave, I don't see any evidence that there's such admixture in Eurasia apart from the Iberomaurusians. Shouldn't there be a simple f-stat that show it, without assumptions like Ust-Ishim is unadmixed OoA? We have all kinds of haplogroup A, B, E Africans. Or are they too mixed with earlier African populations or later West Eurasians?
Or is Basal simply just the earliest split of the same OoA population, without Neanderthal? I'm not even sure about the lower Neanderthal part...

Code:

pop1    pop2    pop3    pop4    est    se    z    p    n
Cameroon_SMA    Altai_Neanderthal.DG    Iran_GanjDareh_N    Laos_Hoabinhian.SG    0.000191843    0.000630904    0.304076412    0.761069677    261242
Cameroon_SMA    Altai_Neanderthal.DG    Georgia_Satsurblia.SG    Laos_Hoabinhian.SG    0.000244638    0.000862176    0.283745025    0.776605787    161463
Cameroon_SMA    Altai_Neanderthal.DG    Turkey_Epipaleolithic    Laos_Hoabinhian.SG    -0.001266509    0.000842443    -1.503375797    0.132742164    219501
Cameroon_SMA    Altai_Neanderthal.DG    Israel_Natufian_contam    Laos_Hoabinhian.SG    -0.000777554    0.000884331    -0.879256897    0.379262001    135789
Cameroon_SMA    Altai_Neanderthal.DG    Morocco_Iberomaurusian    Laos_Hoabinhian.SG    0.001130316    0.000687243    1.644712381    0.100029138    262010
Cameroon_SMA    Altai_Neanderthal.DG    Iran_GanjDareh_N    Japan_Jomon.SG    0.000794769    0.000557704    1.425073065    0.154136082    380577
Cameroon_SMA    Altai_Neanderthal.DG    Georgia_Satsurblia.SG    Japan_Jomon.SG    0.000339939    0.000745916    0.455733901    0.64858134    230556
Cameroon_SMA    Altai_Neanderthal.DG    Turkey_Epipaleolithic    Japan_Jomon.SG    -0.001146785    0.000707427    -1.621065171    0.105003663    320134
Cameroon_SMA    Altai_Neanderthal.DG    Israel_Natufian_contam    Japan_Jomon.SG    -0.000671692    0.000776237    -0.865318722    3.87E-01    195464
Cameroon_SMA    Altai_Neanderthal.DG    Morocco_Iberomaurusian    Japan_Jomon.SG    0.00081042    0.000591526    1.370049419    0.170671476    381263
Cameroon_SMA    Altai_Neanderthal.DG    Iran_GanjDareh_N    Iran_ShahrISokhta_BA2    0.000242659    0.000319817    0.758744244    0.448005565    499896
Cameroon_SMA    Altai_Neanderthal.DG    Georgia_Satsurblia.SG    Iran_ShahrISokhta_BA2    0.000142991    0.000549587    0.260178604    0.794726008    295313
Cameroon_SMA    Altai_Neanderthal.DG    Turkey_Epipaleolithic    Iran_ShahrISokhta_BA2    -0.001397298    0.000532291    -2.625064372    0.008663259    423227
Cameroon_SMA    Altai_Neanderthal.DG    Israel_Natufian_contam    Iran_ShahrISokhta_BA2    -0.001217822    0.000550002    -2.214213397    0.026814103    260012
Cameroon_SMA    Altai_Neanderthal.DG    Morocco_Iberomaurusian    Iran_ShahrISokhta_BA2    0.000795812    0.000425867    1.868685471    0.061666587    499095
Cameroon_SMA    Altai_Neanderthal.DG    Iran_GanjDareh_N    China_Fujian_Qihe_Epipaleolithic    0.001071602    0.000549066    1.95168095    0.050976096    360096
Cameroon_SMA    Altai_Neanderthal.DG    Georgia_Satsurblia.SG    China_Fujian_Qihe_Epipaleolithic    0.001358032    0.000787727    1.723988868    0.084709853    215017
Cameroon_SMA    Altai_Neanderthal.DG    Turkey_Epipaleolithic    China_Fujian_Qihe_Epipaleolithic    -0.000241672    0.000686099    -0.352240189    0.724658139    309304
Cameroon_SMA    Altai_Neanderthal.DG    Israel_Natufian_contam    China_Fujian_Qihe_Epipaleolithic    0.00041958    0.000786175    0.533698288    5.94E-01    197221
Cameroon_SMA    Altai_Neanderthal.DG    Morocco_Iberomaurusian    China_Fujian_Qihe_Epipaleolithic    0.001696777    0.00059482    2.852590958    0.00433644    360836

(Not sure if these f4 stats are readable but they are supposed to show Jomon, Hoabinhian, Longlin and possibly AASI are similarly low Neanderthal.)

Here is a full visualization for this data: