I am not a genetics expert, and I am not Greek, which gives me little legitimacy to intervene here. But I'll give it a crack, just "for the fun of it". I think those autosomal percentages become more significant when you can tie them to y-dna references. So here is my (very personal, subjective) interpretation of your results.
Dodecad K12b
Caucasus 33.22 -- That would be a mix of G2a Caucasus/Anatolian early farmer + J2a Kura-Araxes pastoralist/builder/seafarer. That's what I fancy must have been the genetic makeup of the Minoans.
Atlantic_Med 27.55 -- Something like the Basque mixture, ie Mesolithic HGs (I2a) + G2a early farmer (+ a drop of Bronze age steppe ancestry). Somehow the oldest layer in your ancestry.
North_European 22.69 -- This, I think, is the sum of your Celtic (Dorian?), Germanic (Goths) and Slavic ancestry. Haplogroups R1b and R1a.
Southwest_Asian 7.50 -- A difficult one. I'd say some mix of J2 + J1 (+R). A part of your dna that has remained somewhat similar to that of today's Kurds, who live where the J1/J2 migrations left from.
Gedrosia 4.92 -- I see this as a proxy for a preserved chunk of Pontic Steppe dna.
Northwest_African 2.37 -- Probably E-V22 of Carthaginian or Jewish origin.
South_Asian 1.75 -- A share of dna you have in common with people in Iran/northern India, to whom it was brought by the "Southwest Asians" above.
As said above, this should be taken for what it is, an amateurish, unreliable attempt... Don't take anything for granted. Cheers.
