Stewart sits next to 3 phonetic neighbors — Stuart, Stu, and Steuart are the closest matches by sound. Most share Stewart's Scottish cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"steward, household manager"
"faith, religion"
"grace of God + home ruler"
"from the valley"
"of good appearance and strong physique"
"modern variant of Dawson"
"impulsive, wrathful"
"little Hugh"
"small stream, narrow inlet"
"pure, innocent"
"thunder"
"marshland meadow"
"lucky, fortunate"
"warlike, martial"
"messiah"
"joyful, jovial (from the same root)"
"Yahweh is gracious"
"sun"
"modern invented name"
"slender"
"dwelling near the church"
Similar sound: These names share phonetic patterns with Stewart — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English origins, giving them the same cultural heritage as Stewart.
Rhythm: Stewart is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.