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"
"hero, protector (fictional)"
"well-born, noble"
"firm, unwavering"
"little fire"
"little poet, little philosopher"
"worker in steel (occupational surname)"
"warrior's estate"
"modern invention with spiritual connotation"
"little Aodh (fire deity)"
"beauty, ornament"
"the Lord is my God"
"qualitative time, the fullness of time"
"light, happiness (Ko in Japanese)"
"forest guardian, one who patrols"
"crown, wreath"
"modern American coinage, bright day"
"Jehovah supports"
"God is my strength, God will strengthen"
"pledge of peace, divine peace"
"remembered by God"
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.