Noreen sits next to 5 phonetic neighbors — Coreen, Doreen, and Maureen are the closest matches by sound. Most share Noreen's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"little honor, dear one"
"ancient, enduring (via Kiana/Cian)"
"moon; city of the moon"
"child of light"
"slender, narrow"
"lord, master, lordly one"
"woodland clearing, meadow"
"bright, shining one"
"place name: Channel Island or US state"
"helmet of God, divine protection"
"mighty, powerful"
"peaceful, calm"
"laurel tree, bay laurel"
"ewe of heaven"
"hope"
"song thrush, singing bird"
"hazelnut, wisdom"
"honorable, respectable"
"honesty plant (botanical genus)"
Similar sound: These names share phonetic patterns with Noreen — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Irish diminutive of Honora origins, giving them the same cultural heritage as Noreen.
Rhythm: Noreen is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.