Sarracenias or Trumpet Pitchers are quite promiscuous and hybrids are common in the wild where the range of two or more species overlap - indeed some sites in the wild are composed almost entirely of hybrids. These are called natural hybrids and can be very variable.
Growers have been producing their own hybrids now for many years and those that have been named have some excellent characteristics - usually very vigorous, lovely colouration, long lasting pitchers, and some unusual shapes. When a particularly nice looking plant grows, it will be selected and if it continues to grow well , may be given a name by the breeder. All plants sold as that named cultivar (cv.) will be a part of that original plant and so should be exactly the same.