Ingrid Bergman's 4 syllables (2 + 2) hit the Hollywood sweet spot.
Ingrid's 2 beats vs. Bergman's 2 create a natural cinematic snap.
Ingrid Bergman's softer consonants cost it screen presence.
Ingrid Bergman misses the alliteration hook that makes names stick.
Ingrid (6 letters) and Bergman (7) are balanced in length — clean on any poster or marquee.
Ingrid Bergman's sounds flow naturally in English — easy to say and remember.
Ingrid Bergman has decent vowel richness, but stronger A and O sounds would lift it.