Tan sits next to 4 phonetic neighbors — Dan, Jan, and Van are the closest matches by sound. Most share Tan's Chinese cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"new, fresh"
"Born on the Sabbath; a Russian form of Sabbatius, derived from the ..."
"possibly from Jay (victory) + -co (suffix)"
"beloved, dear"
"son of the battle chief"
"visitor, traveler"
"from Aquino (water town)"
"oarsman; counsel and power"
"storyteller, singer"
"ford of the Welshmen, river crossing"
"Wise; one who is judicious"
"Lion; brave warrior"
Similar sound: These names share phonetic patterns with Tan — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Vietnamese origins, giving them the same cultural heritage as Tan.
Rhythm: Tan is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.