Echo sits next to 3 phonetic neighbors — Eco, Eko, and Juno are the closest matches by sound. Most share Echo's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"reflected sound"
"vast, empty landscape"
"star sun"
"princess, queen"
"beloved"
"first, beginning"
"warrior's estate, Paega's settlement"
"beautiful sky"
"eternal, long-lived (via Amara)"
"princess, noblewoman"
"light of God"
"modern phonetic invention"
"daughter of the mountain"
"the blue princess (fictional)"
"holy, sacred, saintly"
"faith, belief"
"rose (red)"
"from the king's woodland"
"my God is abundance"
"date palm tree"
"princess, flower"
Similar sound: These names share phonetic patterns with Echo — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Echo.
Rhythm: Echo is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.