But Balochi/Gedrosia is usually separate from West-Asian, for instance in K12 and DNA Tribes. This is where it's getting interesting, provided that this separation is no fata morgana.
West Asian in K12b corresponds to "Caucasus", not "Gedrosia". Italy and Balkans is full of "Caucasus" and eastern europe also has some "Caucasus" admixture, but no "Gedrosia", which is detected in West Europe instead.
The heavy 'Caucasus' admixture in Balkans and Italy I associate partially with neolithic farmers, antiquity migrators and partially to early medieval iranian tribes (Bulgars?). The lesser Caucasus admixture in Slavs (and even lesser in Balts) I currently associate with iranian tribes (Antes, Skythian farmers) or other satem speaking IEans.
Excluding the neolithic and antique sources of "Caucasus" admixture it matches both the european satem languages and european R1a.
On the other hand, the "Gedrosia" admixture in west europe matches well the european centum languages and european R1b.
Agree.