Efraim sits next to 4 phonetic neighbors — Ephraim, Efrem, and Abraham are the closest matches by sound. Most share Efraim's Spanish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"fruitfulness (of the land)"
"born on Sunday"
"eternal, hidden"
"great adviser"
"God consoles"
"Romantically associated with the poet Lord Byron meaning noble and ..."
"divine gift"
"nobleman, member of the patrician class"
"servant of Marduk"
"flax, linen plant"
"supplanter (via Jacob/James)"
"sacred name"
"protector of mankind"
"God has promised"
"short form of Israel or Rafael"
"relating to the Levites, priestly tribe"
"Yahweh has given"
"manly, brave"
Similar sound: These names share phonetic patterns with Efraim — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Efraim.
Rhythm: Efraim is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.