Spring sits next to 3 phonetic neighbors — Erin, Fern, and Lynn are the closest matches by sound. Most share Spring's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"to leap or jump"
"summit meeting, diplomatic gathering"
"high tower, elevated"
"place of sanctuary and abundance"
"beautiful, precious"
"orchid flower"
"amber jewel"
"lake maiden"
"channel, waterway"
"Emerald (folk etymology)"
"descendant of Caiside"
"creative blend: pure + garland/wreath"
"God is my light"
"will, determination, desire"
"beautiful, lovely"
"exalted, elevated, high"
"from the green meadow"
"bright, shining one"
"seller of arrows"
"son of Adam, earth (from Addison)"
Similar sound: These names share phonetic patterns with Spring — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English origins, giving them the same cultural heritage as Spring.
Rhythm: Spring is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.