Yannis sits next to 4 phonetic neighbors — Yannis, Yanni, and Janis are the closest matches by sound. Most share Yannis's Greek-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"God is gracious"
"thin-lipped"
"mourner"
"messenger of the gods"
"legendary king of Phrygia, golden touch"
"God saves, salvation"
"goddess of night, primordial deity"
"helper, one who defends"
"God's gift"
"sea god, messenger of the deep"
"the unseen"
"of the gods"
"earth mother follower"
Similar sound: These names share phonetic patterns with Yannis — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew via Greek origins, giving them the same cultural heritage as Yannis.
Rhythm: Yannis is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.