Sharnika sits next to 4 phonetic neighbors — Shanika, Shaniqua, and Sharona are the closest matches by sound. Most share Sharnika's African-American-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"Modern invention combining Sharon (plain, flat land) and Nika (victory)"
"Manly, brave, strong; also child of the earth (African)"
"little ruby; precious red gem"
"chalk landing place"
"heather plant"
"God is gracious (via Shawna/Sean)"
"whimsical, capricious spirit; alive with personality"
"invented name combining Shon (God is gracious) and -tisha (joy, fro..."
"determined protector"
"the Way, the natural path of the universe"
"Noble strength; likely a creative compound name"
Similar sound: These names share phonetic patterns with Sharnika — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have African-American origins, giving them the same cultural heritage as Sharnika.
Rhythm: Sharnika is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.