Pennsylvania governor Josh Shapiro is perhaps the top contender to be Kamala Harris’s running mate. But Shapiro would be an awful selection, with a history of alienating and antagonizing core party constituencies and caving to pressure on major issues.
Except if you read the editorial he wrote, he’s mainly critiquing Arafat and the PLO. He literally says he supports peace but doesn’t think it’s realistic (edit: and closes the article by saying that he hopes he’s proved wrong). He also mentions how Israel won’t relinquish sufficient land to Palestine for peace to be made.
There are many legitimate criticisms of Shapiro (your first link, for example, as well as his flip-flopping on school vouchers), but claiming he’s significantly more pro-Israel than any of the other candidates is misleading. I’m not aware of any other candidates who called Netanyahu the “biggest barrier” to Middle East peace.