Tycho sits next to 3 phonetic neighbors — Tyko, Tico, and Taiko are the closest matches by sound. Most share Tycho's Dutch-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"hitting the mark, fortunate"
"lord of the manor, estate ruler"
"night watchman"
"healer"
"pasture in a marsh"
"the moon; lunar"
"from the hay valley"
"the ringed planet, sixth from the sun"
"one million million (10^12)"
"hot springs, warm wells"
"God appears (Theo-phania)"
"son of Benjamin"
"to travel leisurely"
"clover plant, good luck"
"from Thracia"
"dove"
"narrow piece of land"
"place on a riverbank"
"spear wood (ash was used for spears)"
"stone sword, sword stone"
"one who sways, dancer"
Similar sound: These names share phonetic patterns with Tycho — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Tycho.
Rhythm: Tycho is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.