Ianto sits next to 3 phonetic neighbors — Ianthe, Yanto, and Ian are the closest matches by sound. Most share Ianto's Welsh cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"God is gracious"
"365 heavens (numerological)"
"dove, peaceful"
"Nectar of immortality"
"village at the ford; river-crossing settlement"
"divine disclosure, uncovering of truth"
"Welsh form of Maximus"
"longevity, vital force"
"counsel meadow"
"born of fire"
"brave warrior of the divine"
"fire, flame"
"anointed one; messenger of God"
"clay hill settlement"
"the one who pleases me"
"one who listens intently, listener"
"abundant forest or precious jade"
"drawn from the water"
"of nobility, from the lineage"
Similar sound: These names share phonetic patterns with Ianto — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew via Latin via Welsh origins, giving them the same cultural heritage as Ianto.
Rhythm: Ianto is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.