Poppy sits next to 4 phonetic neighbors — Polly, Molly, and Penny are the closest matches by sound. Most share Poppy's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"poppy flower"
"marshy area near a stream"
"burnt meadow, charred clearing"
"hero, praise (Scandinavian variant)"
"faith"
"man, full-grown person"
"settlement of ravens"
"hedged valley"
"meadow of the wren, small bird meadow"
"young green plant, fresh growth of spring"
"of gold, golden-haired"
"the Frenchman, one who is free"
"tower, high place"
"dark beauty"
"magnolia flower"
"divine messenger, thought"
"God is my judge"
"of noble birth"
"diminutive of Julia; little Julia"
"holly tree"
Similar sound: These names share phonetic patterns with Poppy — 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 Poppy.
Rhythm: Poppy is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.