Logan sits next to 3 phonetic neighbors — Morgan, Hogan, and Rogan are the closest matches by sound. Most share Logan's Scottish cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"Little hollow; from the little hollow place"
"protector of humanity"
"son of the south, youngest son"
"savior"
"teacher, messenger"
"youthful, downy-bearded"
"God is gracious"
"to carry, to endure"
"priceless one, of inestimable worth"
"brave boar"
"name of God"
"earth"
"derived from Calvus, bald"
"strong as a lion"
"son of Gray"
"companion, friend, from Arabic Kadin"
"one who resembles God"
"handsome young man"
"heart, mind, spirit"
"God is gracious"
"wealthy guardian"
Similar sound: These names share phonetic patterns with Logan — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Scottish Gaelic origins, giving them the same cultural heritage as Logan.
Rhythm: Logan is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.