Infinity sits next to 3 phonetic neighbors — Serenity, Trinity, and Destiny are the closest matches by sound. Most share Infinity's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"endless, boundless, without limit"
"all gifts"
"God is my judge"
"prosperous, flourishing"
"judged, vindicated"
"noble, of noble birth"
"ivory, creamy white material"
"who is like God, crown"
"high born, noble"
"elf friend, beloved elf"
"fast, like a jet aircraft"
"dhyana — meditative absorption"
"God has spoken"
"gracious one of the meadow"
"from the hills, hill settlement (Bray) combined with -lin (diminutive)"
"rest, repose"
"favorable, agreeable"
"Hawaiian deity, sacred power"
"refuge, shelter (from Hebrew azilah)"
"princess, noble"
"son of the fair warrior"
Similar sound: These names share phonetic patterns with Infinity — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Infinity.
Rhythm: Infinity is a 4-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.