Rich sits next to 3 phonetic neighbors — Rick, Mitch, and Bitch are the closest matches by sound. Most share Rich's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"powerful ruler, brave power"
"righteousness of God"
"pillar, support"
"lunar, bright as the moon"
"the river that swallows all rivers (from Zaire/nzadi)"
"asked for, prayed for"
"goddess of night, primordial deity"
"occupational name for a burner of coal or lime"
"rocky hill, ancient Armenian region"
"short form of Tobias"
"dweller at the white enclosure"
"modern invented name variant"
"God is salvation, God saves"
"descendant of Ógán"
"from the rose field"
"eldest son (Na'vi fictional language)"
"the Lord is salvation"
"descendant of Bradan (salmon)"
"my God is Yahweh"
"impulsive, wrathful"
"strength, God is my help"
Similar sound: These names share phonetic patterns with Rich — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old German origins, giving them the same cultural heritage as Rich.
Rhythm: Rich is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.