You'll be surprised how many to be honest. May be 'a lot' instead of 'most' would have been a better phrase..Which ones mate?
I think people get confused what single and blended mean. Singles are from malted barley only and can be 'blended' to acquire different tastes but are still single malt. Blended are single malts but malts using barley, rye, wheat etc when blended take the blended name.. If that makes sense? I'm sure that's how it goes..
But the Scottish malt whiskey society also sell genuine un blended single malts from single barrels. They also sell blends too.