An tOiléanach, Mo Bhealach Féin, and Fiche Bliain ag fás are autobiographical, not novels.
Maidhc Dainín Ó Sé is a prolific writer of novels, but he hasn't been accused of literature that I know of.
"An Druma Mór" is a novel
http://www.litriocht.com/shop/product_info.php?manufacturers_id=&products_id=199 8 I have read the books on your list except rothaí mór an tsaoil, and enjoyed most of them.
I'm not sure séadna would make it onto my list, the plot is long winded and contrived (and never finished) , and it seems more to have been a device to write rich Irish than rich literature - something of a fault with an tAthair Peadair.
That has also tended to be a problem with people confusing great Irish with great literature.
Not very helpful I'm afraid, but I'm an engineer, and therefore entitled to be something of a philistine!
Foinse published a top ten recently, you might try getting hold of that list.