Sloan sits next to 3 phonetic neighbors — Sloane, Joan, and Stone are the closest matches by sound. Most share Sloan's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"warrior, raider"
"Ceol's island, ship island"
"ivy plant, climbing vine"
"tempest, stormy weather"
"star that suddenly brightens"
"noble kind, noble nature"
"flowing, streaming"
"bright light"
"God is gracious"
"high, exalted"
"gracious, dear, beloved"
"bright, shining one"
"short for Indiana or India"
"graceful vine"
"precious gem"
"white, fair, pure, blessed"
"light, bright one"
"born of fire"
"people of a different speech, alien speakers"
"gracious, merciful"
"maiden of the coral sea"
Similar sound: These names share phonetic patterns with Sloan — 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 Sloan.
Rhythm: Sloan is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.