Irma sits next to 4 phonetic neighbors — Emma, Alma, and Erma are the closest matches by sound. Most share Irma's German-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"whole, universal"
"love"
"worshipful devotion"
"olive tree"
"son of Maud (Matthew/Matilda)"
"island (from Isla)"
"good judgment, wisdom"
"handsome, fair"
"eternal, everlasting"
"woman from Magdala"
"heavenly flower garland"
"eternal bloom, forever flowering"
"Jehovah has been gracious"
"crowned with laurel, victorious"
"free woman, strong woman"
"symbol of peace and wisdom"
"of the air"
"lovable, worthy of love"
"noble kind, of noble nature"
"earth, land, soil"
"star, celestial body"
Similar sound: These names share phonetic patterns with Irma — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Germanic origins, giving them the same cultural heritage as Irma.
Rhythm: Irma is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.