Sepia sits next to 4 phonetic neighbors — Sophia, Lydia, and Celia are the closest matches by sound. Most share Sepia's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"Reddish-brown color; cuttlefish ink; from Greek sepia meaning cuttlefish"
"sheath, layer of the soul"
"God will establish, raised by God"
"peaceful (via Shanti/Sanskrit influence)"
"divine, of Dionysus"
"Variant of Jenna/Jenny, ultimately from Hebrew Yohanan meaning God ..."
"Modern invention; possibly derived from Tamika (sweet child) with t..."
"great, mighty, large"
"thought of the divine"
Similar sound: These names share phonetic patterns with Sepia — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Sepia.
Rhythm: Sepia is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.