Henry B. Walthall's 4 syllables (2 + 2) hit the Hollywood sweet spot.
Henry's 2 beats vs. B. Walthall's 2 create a natural cinematic snap.
Henry B. Walthall's softer consonants cost it screen presence.
Henry B. Walthall misses the alliteration hook that makes names stick.
Henry (5 letters) and B. Walthall (9) have a slight length mismatch, but it reads fine on screen.
Henry B. Walthall has mostly familiar phonemes with a few tricky patterns.
Henry B. Walthall has decent vowel richness, but stronger A and O sounds would lift it.