The idea that the ethnogenesis of the ancient Mycenaeans cannot totally disregard either the northern model, with people arriving from the Balkans, or the eastern one with more confused influxes of peoples from the Anatolian-Caucasian area continues to haunt me in the back of my skull. Each of these models has strengths and weaknesses, but considered in a correct chronological sequence they don't necessarily clash.
The northern model corroborates the more traditional (or known) image we have of the archaic Greek world from a cultural and social point of view, better justifies the introgression of haplogroups and part of the steppe autosomal DNA in the make-up of the population and goes to crown the formation and stabilization of the Mycenaean language in the proper sense. But perhaps all this was only the final series of a much longer fiction.
In the prequel the eastern model of Lazaridis should perhaps be called into question. Instead, this certainly manages to justify better than the previous one the overwhelming number of Caucasus-Iranian haplogroups in the Aegean population and obviously the bulk of the basic Anatolian-Neolithic autosomal, gradually corrected by an increasing quota of CHG DNA. Regardless of how things objectively went, I believe it is correct to necessarily take into account this substratum ("Minoan" or more generally pre-Mycenaean), which in any case incubated much of what we call "Mycenaean" and influenced it to various title (if only for the domination of the Cretan thalassocracy in the whole region)
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Therefore, if the basic idea - of this study and of the previous one by Lazaridis last year - which in practice also supports the existence of an archaic Indo-European Caucasian nucleus not tributary of the steppes is confirmed as valid, we should perhaps begin to consider the 'Indo-Europeanization of Mycenaean Greece operating on two fronts, like a pincer that squeezes the Aegean and its coasts precisely from the north and east.
Obviously, if we work with traditional concepts, including those of a rigid genetic and linguistic distinction between Indo-European Mycenaeans on the one hand and non-Indo-European Minoans on the other, the operation can be difficult. However, if we assume that this separation was much more nuanced and gradual, with some intermediate links to consider, perhaps there could be some surprises.
In concrete terms, I would hope that some expert would take up and examine better the hypotheses put forward decades ago by some linguists - I am referring to authors such as Georgiev in the 1950s or more recently Finkelberg - who, analyzing the texts of Linear A, suspected that behind that language was an Indo-European or Indo-European-influenced idiom. Precisely Finkelberg at the beginning of 2000 saw in the Cretan Minoan a relative of the Luvian or one of its predecessors, and in any case and in the last analysis something reconnectable to the Anatolian Indo-European group.
In my opinion they are old proposals which in the light of these latest genetic and glottochronological investigations appear less science-fiction or extravagant than one thinks
https://www.academia.edu/24273902/The_Language_of_Linear_A_Greek_Semitic_or_Anatolian