Abundance sits next to 3 phonetic neighbors — Prudence, Constance, and Florence are the closest matches by sound. Most share Abundance's Latin-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"overflowing plenty, great fullness"
"liberation, blowing out"
"ash tree meadow (from Ashley root)"
"the number six"
"like the sun"
"force, power, activity, being at work"
"one who grinds grain, miller"
"from the boar meadow"
"happiness, joy"
"first name unknown (administrative placeholder)"
"wild rose of the people"
"God has answered, gracious"
Similar sound: These names share phonetic patterns with Abundance — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Abundance.
Rhythm: Abundance is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.