Montana sits next to 4 phonetic neighbors — Savannah, Fontana, and Santana are the closest matches by sound. Most share Montana's Spanish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"mountainous, of the mountains"
"gift, kingly"
"bird"
"dedicated to Mars"
"bright, shining one"
"lily flower"
"member of the Gauts tribe"
"God is gracious"
"beautiful"
"small, humble"
"God is gracious, God has shown favor"
"fertile place, place of abundant water"
"quaking aspen tree"
"friend, friendly"
"noble, of noble kind"
"crooked mouth"
"mortal princess loved by Zeus (mythological)"
"queen of orchids (named after William Cattley)"
"vigilant, watchful"
"elf ruler with feminine suffix"
"of the king, regal"
Similar sound: These names share phonetic patterns with Montana — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin via Spanish origins, giving them the same cultural heritage as Montana.
Rhythm: Montana is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.