Timmy sits next to 4 phonetic neighbors — Timmie, Tammy, and Tilly are the closest matches by sound. Most share Timmy's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"honoring God, one who honors God"
"moon goddess, famous warrior"
"American creative invention"
"fairy"
"God is my oath"
"free person, strong one (via Carla/Carl)"
"messenger of God; angel"
"supplanter"
"Gaelic form of Jane/Jean"
"broom-covered hill, beacon hill"
"of the alder tree"
"pure, clear"
"bright fame"
"Of the sea, warrior; defender of the sea"
"of Thor, thunder"
"Variant of Sherman; from the shearing settlement"
Similar sound: These names share phonetic patterns with Timmy — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Timmy.
Rhythm: Timmy is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.