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"
"zero, spirit"
"a 14-line poem with a specific rhyme scheme"
"female heir, inheritor of wealth"
"beloved, dear"
"seat of the eye, throne"
"to tame, subdue"
"hidden"
"magical letter, written symbol"
"blooming, young green shoot"
"coral (ocean organism/color)"
"of noble birth"
"noble friend"
"The other Aenor (foreign)"
"modern phonetic variant of Wyatt"
"beautiful, lovely"
"God is gracious"
"heavenly flower of the night"
"beloved"
"valley + lake, meadow-pool"
"official of Yah"
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.