Ellias sits next to 4 phonetic neighbors — Elias, Elijah, and Ellis are the closest matches by sound. Most share Ellias's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"my God is Yahweh"
"island of the river"
"shining, bright (via Hebrew Meir)"
"red-haired, famous"
"rejoice, be glad (via Gaius/Caio)"
"oak tree"
"keen ruler, bold king"
"bold, daring"
"bearer of Christ"
"jovial, full of good cheer"
"victory of the people"
"God supports, Yahweh supports"
"earth (via Gaia connection)"
"champion, cloud"
"pure, chaste"
"lake, calm water (via -lyn)"
"YHWH is salvation, God saves"
"victory of the people (as short form of Nicholas)"
"to shine, emit light"
"gift of Isis"
"sad"
Similar sound: These names share phonetic patterns with Ellias — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Ellias.
Rhythm: Ellias is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.