Alisson sits next to 5 phonetic neighbors — Allison, Alison, and Alyson are the closest matches by sound. Most share Alisson's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"noble kind, of noble birth"
"eagle power, noble strength"
"descendant of the fire god"
"glory, fame"
"God is gracious, sun (possible alternate)"
"modern musical creation"
"marvel, object of wonder"
"torch, bright one"
"battlefield"
"white, pure"
"unfortunate, ill-omened"
"belonging to Clement"
"flowing, streaming"
"modern invented name (Jay + lani)"
"saw-toothed ridge"
"rest, comfort (when borrowing the male Noah's meaning)"
"peace, tranquility"
"one who works the earth"
"messenger"
"joyful, of Jupiter"
"murmuring rock on the Rhine"
Similar sound: These names share phonetic patterns with Alisson — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Germanic via French origins, giving them the same cultural heritage as Alisson.
Rhythm: Alisson is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.