Han sits next to 3 phonetic neighbors — Jan, Khan, and Van are the closest matches by sound. Most share Han's Chinese cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"Han dynasty, Chinese people"
"Keepers of the Western Door"
"phonetic variant of Ryker"
"from Saint-Denis"
"of Mars, warrior spirit (Mars element)"
"merchant, trader"
"the new house"
"little fire"
"promised by God"
"fair, bright one"
"watchful, alert"
"son of Hugh"
"God is gracious"
"father of peace"
"beautiful, good"
"God is gracious (from Shawn/Sean)"
"descent, descending"
"alert in battle"
"faithful, genuine, true"
"modern coinage; visually distinctive invented name"
Similar sound: These names share phonetic patterns with Han — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Chinese origins, giving them the same cultural heritage as Han.
Rhythm: Han is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.