There are lots of zone two fruit trees available , cross's that have been introduced .I've had pear trees here ( rabbits killed them by gnawing off the bark at the base ) , apple trees , cherries raspberries , etc .....peach trees have sparked a interest but I've never actually bought any . You need to look at the Canadian prairie provinces , Saskatchewan , Manitoba which offer low zone fruit trees
That's where my awesome apple trees were originally developed, Saskatchewan.