Adding to my last post some statistics and numbers from YFull, which main advantage is that E-BY5022 being reported in comparable numbers directly, due to the lack of predictions for other branches, and the higher numbers of testers from some regions, most notably Albania - on the contrary, the representative character of the testers is very bad for Ukraine and Germany, among others. The data base is pretty small, but most of the results are rather consistent and add up.
Anyway, here are some numbers - I always compared the main branch with the E-V13 total, to get a relative share of the specific main branch in the total E-V13 population. This is sometimes more important than the total regional frequency:
Looking at Romania, it is the only country which is in the top group of all main branches - its E-V13 population practically exists only of main branches (Z5018, Z5017, BY5022). That's remarkable because its not the case for any other country. Interestingly, 1 out of 2 Romanian BY5022 members comes from the Eastern part of the country - BY5022 being also present in Moldova. The data base is super small, but this might point to BY5022 being more common in the East, especially since Z5017 totally dominates South Western ethnic Romanians in particular.
The whole area from Romania-Bulgaria through to the West Balkan is completely dominated by E-Z5017. E-Z5017 cuts through E-Z5018 dominated areas, with Z5018 being still high in most of these areas. But it looks like it expanded "inside-out", on top of E-Z5018, from the South Dacian core (Southern Romania-North Eastern Serbia-Northern Bulgaria) of Basarabi and later Vlachs.
Armenia is interesting because it has so little Z5017, but received both from the North Z5018 and from the South-Greeks E-BY5022 at comparatively high levels. E-BY5022 peaks in Armenia, Syria and Iraq. Armenia with access to steppe influx has a lot of Z5018 as well, whereas otherwise BY5022 is far better represented in the Near East than Z5018 compared to European numbers.
England has a similar situation to Armenia, just being less extreme and more diverse, but still Z5018 and BY5022 being both significantly above average, pointing again to two different routes/origins of the branches.
We therefore have the following situation:
- The earliest expansion was of E-BY5022 which was concentrated in South Thracians. Its main routes of expansion were to the South East (Greece, Cyprus, Near East) and over sea (South Italy, but also Portugal and England).
- The next was that of E-Z5018, which gained a dominant position in much of E-V13 territories, likely due to its association with the Gáva-related Channelled Ware expansion. It had two very big expansion routes, one into the South Balkans (Albanians, Greeks), the other along the Danube Westward into Central Europe and to some degree also into Northern Italy.
- At the same time E-Z5017 made its big appearence, mainly with CTS9320, likely starting from Belegis II-Gáva or Vartop of the Southern Channelled Ware groups. It however did expand signfiicantly on top of the existing Z5018 layers, especially from Basarabi, into the South Dacian, into the Vlach periods, made its biggest impression on the very core zones of the Dacians, and from there into the West Balkans later, especially with the Vlachs.