I am not sure what Fumetti means. I think it roughly means COMICS in Italian.
In HELP!Magazine Harvey Kurtzman called his photograph stories Fumettis. His Fumettis had the format of comics... the people spoke with balloons coming from their mouth, and it was panel after panel, in sequence.
I think every issue of HELP! had a Fumetti story. I can't think of one that didn't.
Here is a fine example of Harvey Kurtzman's Fumetti. The star of this one is comedian Henny Youngman (1906-1998).
Of course you know to click on each page to make them bigger.... right?