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"
"born of the ocean wave"
"heavenly, exalted"
"gift of God, godlike"
"rose"
"cassia tree, cinnamon bark"
"love"
"power of the people"
"prophet, seer"
"God is my strength"
"speckled, spotted"
"strength, virtue, honor"
"helpful, one who provides assistance"
"new house, new home"
"short land, curtailed land"
"eternal king, pure lineage"
"nobleman, patrician (via Patrick)"
"son of Rawlin"
"grey valley or grey pool (surname origin)"
"companion, horse"
"deep valley dweller"
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.