GGal ... freezer slaw? oh please do tell! And please show us your Mystery Quilt at each step of the way!
QNSue ... I'd go with Jersey for 3 of the 4. Swiss are similar, so yes could be. Colour wise, none are apt to be Guernsey, though yes, it could be a very dark one. The broken colour one could be a lot of things ... Milking Shorthorn, Jersey, Guernsey, Ayrshire .... and perhaps crossed with a Holstein or Shorthorn.