The big (or should i say fat
) guy on top looks like a "Kartäuser"
http://de.wikipedia.org/wiki/Kart%C3%A4userkatze as we name them here - sadly i don't know their english name, maybe "Chartreux". They always have this steel-blue plushy skin and are usually quite tall. You cannot go wrong with this cat as they are usually calm and adherent and have a nice character. There are also British Shorthair with this color but they are smaller ...
Yes, i also think that the lower is a Scottish Fold.