Azul sits next to 3 phonetic neighbors — Azure, Azuul, and Azu are the closest matches by sound. Most share Azul's Spanish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"blue"
"literary name of uncertain origin"
"safe, unharmed, peaceful"
"purple gemstone (jacinth)"
"excellent, distinguished"
"little warrior"
"worshiper of YHWH"
"the Most Merciful (divine attribute)"
"knight, horseman"
"guarded place"
"brave as a lion"
"noble strength"
"handsome, beautiful"
"worshipper of Allah"
"from the mountains"
"fruitful garden, vineyard"
"friend of God (theological use)"
"song, nightingale"
"God is with us"
"desired, wished for"
Similar sound: These names share phonetic patterns with Azul — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Spanish from Arabic lazaward origins, giving them the same cultural heritage as Azul.
Rhythm: Azul is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.