Jill sits next to 3 phonetic neighbors — Jillian, Gill, and Jillie are the closest matches by sound. Most share Jill's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"youthful, child of the gods"
"Bright, shining light; torch"
"noble kind, of noble birth"
"exalted, noble, high"
"intensely fragrant"
"graceful, elegant"
"gift of God"
"meadow or woodland clearing"
"western lake"
"symbol of remembrance and sleep"
"defender of men"
"brave, bold"
"little life, vibrant one"
"who is like God"
"woodland glade gem (compound)"
"heavenly, sky royalty"
"feminine form of Leo"
"orchid flower"
"night beauty, celestial"
Similar sound: These names share phonetic patterns with Jill — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Jill.
Rhythm: Jill is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.