Ethel Barrymore's 5 syllables (2 + 3) hit the Hollywood sweet spot.
Ethel's 2 beats vs. Barrymore's 3 create a natural cinematic snap.
Ethel Barrymore's softer consonants cost it screen presence.
Ethel Barrymore misses the alliteration hook that makes names stick.
Ethel (5 letters) and Barrymore (9) have a slight length mismatch, but it reads fine on screen.
Ethel Barrymore's uncommon phonemes make it harder for audiences to latch on.
Ethel Barrymore's open vowels roll off the tongue — warm and screen-ready.