The Cast of Adverts/Commercials
It's really hard to find out who the person you half recognise is. Adverts are like the early days of Cinema when actors were deemed unimportant (and therefore paid little) by the film makers and so not named - until the public demanded it. You can find the advert making company sites which will credit the 'creative' people (who presumably work for that company) but will not list the cast.
How hard would that be to do?
My current bugbear is a Samsung phone advert: https://www.youtube.com/watch?v=CXXoY4gu-2s
The 'lead' is Jamie-Rose Duke and you also see comedian Eleanor Morton, but who is the actress who shows the phone at the beginning?