Tondia sits next to 5 phonetic neighbors — Tonia, Tonya, and Sondra are the closest matches by sound. Most share Tondia's Latin (via Antonia)-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"praiseworthy, priceless"
"little Anna, gracious one"
"admirable, hawk-like"
"friend, fair one"
"life; living"
"yew tree; archer"
"victory of the people"
"Sun; one who gives life and light"
"painted people (historical Celtic root)"
"people conqueror"
"covered with mist, foggy"
"yew tree"
"flat fertile plain"
"brave warrior, strong as stone"
"God is gracious"
Similar sound: These names share phonetic patterns with Tondia — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin (via Antonia) origins, giving them the same cultural heritage as Tondia.
Rhythm: Tondia is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.