Jonah sits next to 3 phonetic neighbors — Jona, Noah, and Nona are the closest matches by sound. Most share Jonah's Hebrew-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"dove"
"to flow down, descend"
"precious green gemstone"
"work, labor, vigor"
"murmuring rock (from the Rhine)"
"beautiful"
"Ireland, from Eire"
"spring"
"pure"
"daughter"
"descendant of Cathach"
"linden tree hill or valley"
"butterfly (by association with Vanessa genus)"
"star"
"bright, beautiful"
"priest"
"unique feminine name"
"bright-headed, fair"
"defender of men (if from Alex root)"
"elf ruler, noble and bright"
"my angel"
Similar sound: These names share phonetic patterns with Jonah — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Jonah.
Rhythm: Jonah is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.