Kerrigan sits next to 3 phonetic neighbors — Carrigan, Corrigan, and Morgan are the closest matches by sound. Most share Kerrigan's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"descendant of Ciaran (little dark one)"
"courageous, brave (via Riley)"
"invented fictional name, inspired by Ashoka (without sorrow)"
"reform, reconciliation, making things right"
"variant of Agnes/Vanessa"
"divine blessing or covenant"
"one who rises again"
"fair-haired hero"
"flower"
"perfect, complete"
"lake (from Welsh -lyn)"
"joyful, playful"
"beloved"
"she who intoxicates, cause of great joy"
"divine, of Zeus"
"rye meadow"
"from Lassy (Normandy), de Laci"
"city of mosaics"
"creative modern coinage"
"raven meadow, brave one"
"high, elevated"
Similar sound: These names share phonetic patterns with Kerrigan — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Irish Gaelic origins, giving them the same cultural heritage as Kerrigan.
Rhythm: Kerrigan is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.