Jhonathan sits next to 3 phonetic neighbors — Jonathan, Johnathan, and Jonathon are the closest matches by sound. Most share Jhonathan's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"God has given"
"stony ford"
"worshiper of God"
"curly-haired"
"beloved"
"abundant, prosperous growth"
"true, faithful, loyal"
"victory of the people"
"from Arles (city in France)"
"Resolute protection; will-helmet"
"God will add / God shall increase"
"a days work or travel"
"black, dark-featured"
"to shout, to sing joyfully"
"strong, powerful"
"grandchild, descendant"
"great tide"
"ancestor's descendant (alternative etymology)"
"one who works with stored grain"
"brewer, one who brews"
Similar sound: These names share phonetic patterns with Jhonathan — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Jhonathan.
Rhythm: Jhonathan is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.