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"
"elm (river or settlement by elm trees)"
"valley, dale"
"lord, respected elder (if from Sire)"
"modern invented name"
"manifestation of God, Epiphany"
"son of Jeffrey, son of peace"
"village of the Danes"
"descendant of Rian"
"sight, ability to see"
"messenger of God"
"modern coinage combining Matt + -ix suffix"
"Yahweh is God"
"olive warrior"
"rejoicing in the way"
"griffin (mythical creature symbolizing strength)"
"urbane, sophisticated"
"one who sways, dancer"
"to heal, to cure"
"olive tree"
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.