Yicheng sits next to 3 phonetic neighbors — Yichen, Yifeng, and Yizheng are the closest matches by sound. Most share Yicheng's Chinese cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"suitable and honest (宜诚)"
"maile vine (sacred Hawaiian plant)"
"brings rain; water-giver"
"God has heard"
"strength, royalty"
"one who lives in a valley"
"beloved, friend"
"enthusiasm, ardor, passion"
"beloved, desired"
"very blue, sapphire"
"from the east, east settlement"
"champion, passionate one"
"rock, stone"
"of the Vergili clan"
"healer"
"blessed, fortunate one"
"one who wraps himself in devotion"
"one who makes things easy, the fortunate one"
"God has given"
"high prominence, brow"
"handsome, beloved"
Similar sound: These names share phonetic patterns with Yicheng — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Chinese origins, giving them the same cultural heritage as Yicheng.
Rhythm: Yicheng is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.