Great Irish albums not on that list:
Horslips The Táin
Mellow Candle Swaddling Songs
The Bothy Band Old Hag You Have Killed Me
The Virgin Prunes If I Die, I Die
Operating Theatre Rapid Eye Movements
The Jimmy Cake Dublin Gone, Everybody Dead (though you could put any of their albums there in its place)
Sea Dog Wizards of the Coast
David Kitt The Big Romance
Brian Conniffe/Suzanne Walsh/Diarmuid MacDiarmada self-titled
Drainland And So Our Troubles Began
Gemma Hayes Night on My Side
Decal Brightest Star
Does Nurse With Wound count given that he’s been living and working in Clare for about 30 years now?
Solid list. Some day I'll make an album worthy.