Eitan sits next to 3 phonetic neighbors — Ethan, Aidan, and Etan are the closest matches by sound. Most share Eitan's Hebrew-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"permanent, steadfast"
"bold counsel, brave advisor"
"stellar explosion, burst of light"
"son of Judd"
"God exists, gift"
"dark-skinned, Moorish"
"modern invented name"
"winding valley"
"strength, permanence"
"son of Harry"
"Zion variant, promised land"
"crow, raven"
"from the Roman family Terentius"
"drop, teardrop"
"eternal, perpetual"
"prestige, luxury (cultural association)"
"young male horse"
"rock hill, old hill"
"barrel maker, cask craftsman"
"church official"
"aspen tree, quaking poplar"
Similar sound: These names share phonetic patterns with Eitan — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Eitan.
Rhythm: Eitan is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.