Well, I read that differently. 'Some or all' is merely legalese, a way of not excluding anyhting you don't have to. I think the implication is that the Swedish end of the Lugano team may include a member (or members) of the Nobel Prize nomination committee. Which may or may not be relevant. But I don't think it is meant to imply that Rossi is up for a Nobel himself. Badly drafted and vague- as is so much of this stuff.
ETA. The very secretive nature of the Nobel process ensures we will never know much about those involved in choosing the nominees.
"The statutes of the Nobel Foundation restrict disclosure of information about the nominations, whether publicly or privately, for 50 years. The restriction concerns the nominees and nominators, as well as investigations and opinions related to the award of a prize."