Icarus sits next to 5 phonetic neighbors — Marcus, Darius, and Lazarus are the closest matches by sound. Most share Icarus's Greek-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"uncertain — possibly related to the island of Ikaria"
"little slender one"
"from Vinci (a town in Tuscany)"
"God will uplift, God will exalt"
"safe, uninjured"
"field, plain (Latin campus)"
"sky-inspired modern coinage"
"speckled, spotted"
"work-power, vigorous ruler"
"noble watchman"
"paradise, bliss"
"craftsman, artisan"
"sea friend"
"champion, cloud"
"dark, black"
"anointed one who carries"
"little warrior"
"he who grasps the heel"
"new house, new home"
"he enlightens"
"one who soars to great heights"
Similar sound: These names share phonetic patterns with Icarus — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Icarus.
Rhythm: Icarus is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.