I like
EilisEithneCatrionaFionnualaMaireNeasaSorcha
Fearghal - would change it to Ferghal or so
FionntanMeallan/Mellan
Phelan
I dislike
CaoimheDymphnaEileenSaorise
EachannFeardorcha - sounds mumbly and not very masculine neither
Mainchin - reminds me of munchkin
Naoise - sounds like a girls name
Peadar - sounds like a misspelled
PeterSeachnallSeoirse