Dempsey sits next to 4 phonetic neighbors — Kelsey, Lindsey, and Chelsea are the closest matches by sound. Most share Dempsey's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"proud descendant, descendant of the proud one"
"bearer of good news"
"tree bower, shaded alcove"
"grace + God is my oath (Anna + Lisa)"
"successful, beloved"
"bright, shining"
"consecrated to God"
"high chief, exalted one"
"from Brittany; land of the Britons"
"from the round hill"
"modern invented name"
"each of the two (disputed origin)"
"suffering, enduring"
"nickname form of Adelaide, Addison, Adeline"
"fair, white, blessed"
"thankful; God has heard"
"pure, spotless"
"variant of Mariah (beloved of God)"
"American coinage blending Da- prefix with Aisha"
Similar sound: These names share phonetic patterns with Dempsey — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Irish Gaelic origins, giving them the same cultural heritage as Dempsey.
Rhythm: Dempsey is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.