Mikko sits next to 3 phonetic neighbors — Miko, Nico, and Nikko are the closest matches by sound. Most share Mikko's Scandinavian cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"who is like God?"
"God's staff, royal scepter"
"son of Eric, son of the ever-ruler"
"who is like God?"
"dark, coal-black"
"building material, beam"
"short form of Christopher"
"people's king"
"just, fair"
"bearer of Christ, Christ-carrier"
"ancestors relic, heir"
"famous wolf"
"lion of God"
Similar sound: These names share phonetic patterns with Mikko — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew via Finnish origins, giving them the same cultural heritage as Mikko.
Rhythm: Mikko is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.