It is my Dad's name and I would definitely consider using it for a son of mine. It is pretty much always in my top 10. I have known quite a few Peters in my life but it isn't overly popular, just well known.
Peter Declan Malachy is my combo. Or just
Peter Declan. Or sometimes
Peter Malachy. I don't usually stray too far there :-p
My Dad is
Peter David which I think is very handsome.
I really like
Peter Alban,
Peter Benjamin and
Peter Samuel from your list.