Tampa sits next to 3 phonetic neighbors — Tamara, Tammy, and Tatum are the closest matches by sound. Most share Tampa's Timucuan-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"sticks of fire"
"powerful ruler"
"Grace, favor"
"bright woodland clearing, shire meadow"
"Combination of Hugh (heart, mind, spirit) + the feminine suffix -lene"
"noble, of noble kind"
"beloved friend, dear one"
"truth (possible Alethea derivation)"
"violet flower"
"a simple bound shoe; the sandalwood tree"
Similar sound: These names share phonetic patterns with Tampa — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Timucuan origins, giving them the same cultural heritage as Tampa.
Rhythm: Tampa is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.