Ephraim sits next to 3 phonetic neighbors — Efrem, Abraham, and Efraim are the closest matches by sound. Most share Ephraim's Hebrew-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"fruitful, doubly fruitful"
"lowlands"
"God enlightens"
"remembered by Yahweh"
"James reversed — an ananym honoring the name James"
"father of a multitude"
"help, helper"
"gift of God, gift of Yahweh"
"God is my help"
"God sees, God allocates"
"God supports, Yahweh supports"
"swiftness, fleetness"
"the refreshing one"
"peace"
"eagle"
"evening, twilight, the pleasant time of day"
Similar sound: These names share phonetic patterns with Ephraim — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Ephraim.
Rhythm: Ephraim is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.