Shea sits next to 4 phonetic neighbors — Shay, Chase, and Jay are the closest matches by sound. Most share Shea's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"hawk-like"
"descendant of Riagán"
"son of Henry"
"son of the bright pledge"
"from the moon"
"servant of God"
"a large inland body of water"
"continuous improvement (kaizen-inspired)"
"power of peace"
"supplanter"
"protector of the people"
"scarce, seldom"
"rush plant (marsh grass)"
"holy name, sacred name"
"soaring, high-flying"
"the opportune or right moment"
"noble elder"
"son of Jack"
"man from the north, Northman"
Similar sound: These names share phonetic patterns with Shea — 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 Shea.
Rhythm: Shea is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.