They probably are named cultivars. Not the same cultivars but the first three are Guzmanias, the fourth picture is a Vriesea, and the fifth I can't see enough of the plant to tell. The last one could be a couple of different Bromeliads but the flower is what makes for a positive ID. It's probably a Vriesea too but might be Aechmea or one of the others. Love the striped foilage on that one.
