Distribution of the types

[leckysupport]

That perfectly agrees with my own experience.

Also, most of publicity and marketing is Si and Fe. Surely it's an indication that they are among the most common functions?

IMO it's a indication that those elements have a role to play in convincing people of images and impressions.
Just like how logic and intuition best gets across abstract logically based ideas.

[Jarno]

IMO it's a indication that those elements have a role to play in convincing people of images and impressions.
Just like how logic and intuition best gets across abstract logically based ideas.

I think so too.