Tommi sits next to 5 phonetic neighbors — Tommy, Tammy, and Tomi are the closest matches by sound. Most share Tommi's Scandinavian cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"twin"
"rye clearing, meadow"
"meadow, woodland clearing"
"one who hears, God has heard"
"tranquility, cessation of war"
"remarkable story, myth"
"oak tree"
"fertile land, place of plenty"
"hazel-tree meadow, clearing of hazel trees"
"beautiful (Yiddish/Hebrew)"
"hunter, rising in the sky"
"goddess"
"short form of Alexandra/Alexis"
"gift of God (short for Theodore/Theodora)"
"of the kings, royal dynasty"
"bright, torch (via Helena/Jelena)"
"possessing goodness"
"lioness of God, God is my lion (from Ariel root)"
"courageous, valiant"
"God will add, God will increase"
"sword, firebrand (Germanic etymology)"
Similar sound: These names share phonetic patterns with Tommi — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Aramaic origins, giving them the same cultural heritage as Tommi.
Rhythm: Tommi is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.