Imogen sits next to 4 phonetic neighbors — Imogene, Imogen, and Morgan are the closest matches by sound. Most share Imogen's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"maiden, girl"
"white, blessed + peace"
"herb of grace, regret"
"famous warrior (heil + wīg)"
"little deer, from the deep"
"strength in battle"
"falling tone, resolution"
"dear, beloved, darling"
"bearer of Christ (from Christopher)"
"hare's meadow, hare's clearing"
"boomerang, curved throwing stick"
"counsel + lake"
"pearl"
"fierce, powerful one"
"short form of Emma or Emilia"
"judge, arbiter"
"white settlement"
"entirely beautiful"
"dear to Saturn"
"ray of light (modern association)"
Similar sound: These names share phonetic patterns with Imogen — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Celtic origins, giving them the same cultural heritage as Imogen.
Rhythm: Imogen is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.