Joab sits next to 4 phonetic neighbors — Job, Joab, and Jacob are the closest matches by sound. Most share Joab's Hebrew-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"the Lord is willing"
"short form of Isaac"
"form of Michael"
"God will add, God increases"
"pure, innocent, clean"
"fire of Yahweh"
"name of God"
"open, wide"
"lordly, masterful"
"my God is king"
"deer, stag"
"of the Cassius family"
"worshiper of YHWH"
"grandfather"
"high mountain, exalted"
"brave one"
"red earth, ground"
"peace, wholeness, completeness"
"work of God"
"son of excellence, son of distinction"
Similar sound: These names share phonetic patterns with Joab — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Joab.
Rhythm: Joab is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.