Reddit mentions of Irish and American Fiddle Tunes for Harmonica

https://www.amazon.com/Irish-American-Fiddle-Tunes-Harmonica/dp/0931759102

Really though, all these melodies can be done an octave higher and get the same goal. All the Paddy tuning gives is opening up the lower octave for faster tunes. For your ballads you can even get away with bending for that missing note a paddy gives. The Paddy tuning was originally conceived for the fact consistantly hitting that bend in faster playing sounded horrid.

Just look at the notes available on a regular Richter and compare it to sheet music. Don't be afraid to bend in folk melody playing, at least if you're not accompanying anyone.