Left aligned for sure! For this layout with the strong visual on the right, left-aligned text balances it perfectly and guides the eye better. Centered would compete with the imagery. Great execution btw!
Left aligned. The text gets its own column and the visual keeps the right side, so both read better. Centered, the headline sits right on top of the busy part.
Centered works nicely here since the skater sits right in the middle of the frame, but left aligned would give the motion trail more room to breathe. I'd go left aligned.
I am leaning left aligned on this one. The centered version looks nice at a glance, but with a long headline and body copy beside it, the left version keeps the reading order clear.
Good choice putting the motion in the footer. By the time someone scrolls that far they're already interested, so it rewards them without slowing down the first impression. For a health records app it also helps that the motion stays calm and doesn't feel flashy.