Brandt sits next to 4 phonetic neighbors — Brant, Grant, and Brand are the closest matches by sound. Most share Brandt's German-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"sword, blade"
"homeland person"
"son of Adam"
"asked for, prayed for (via Aramaic Saul)"
"noble, princely"
"fine-grained grey metamorphic rock"
"land of oaks"
"ascended, elevated"
"one who understands, expert"
"from the fortified town"
"friend, ally"
"son of the devotee of Saint Fillan"
"pure, without deception"
"great, rocky hill"
"tomorrow, the future"
"high and mighty, chief"
"gift of God"
"powerful, excellent, good feeling"
"swift, quick"
"fair, lawful"
"bearer of Christ"
Similar sound: These names share phonetic patterns with Brandt — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old Norse origins, giving them the same cultural heritage as Brandt.
Rhythm: Brandt is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.