Brook sits next to 4 phonetic neighbors — Brooks, Brooke, and Brock are the closest matches by sound. Most share Brook's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"small stream, flowing water"
"God has given"
"narrow (place name origin)"
"ford near a landing stage or wharf"
"beauty, handsomeness"
"spear ruler, spear power"
"Son of Neil; champion lineage"
"heavenly city, promised land"
"gift of healing"
"hope, aspiration"
"lion, my lion"
"nurse, foster-mother (occupational surname)"
"helmet of will, resolute protector"
"lord, have mercy (liturgical)"
"pure"
"one who bakes bread"
"thorny shrub, wild rose"
"elf warrior (alternative etymology)"
"of the forest, from the wood"
"something deserved, virtue"
"from Laurentum (laurel city)"
Similar sound: These names share phonetic patterns with Brook — 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 Brook.
Rhythm: Brook is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.