fyi most people in the know don't consider mycenaeans to be necessarily much relevant to later greek civilization, the greece of homer hardly overlaps with the archaeological palatial civilization of the mycenaeans, as if the greeks of homer were really more of the kind of people who directly or indirectly put down bronze age aegean civilization during the bronze age tumultuous times rather than those divergent myceanean-greek speakers themselves; after all, the only rather close descendants of mycenaean greek speakers ended up at the fringe of the historical greek world in the interior of the peloponnese conquered by dorians and in cyprus this shouldn't surprise, it's a bit like germanic migrations, the goths were the first and quick to be full assimilated by the people they conquered in roman states and to basically assimilate the local bureaucratic machine 1to1, but in turn they were overtook by other waves of germanic groups as herodotus says, hellenes were always a minority and pelasgians were absorbed by them, though for certainly it does seem like, just as herodotus after all says, the bulk of the attic-ionian population base was pelasgian in origin
Italy