Difference between American Girl and Hopscotch Hill

The American Girl dolls most well known by girls are 18", soft stuffed body with vinyl arms, legs and face. They have wigs, versus the 'knock offs' that are also 18" high. The Hopscotch Hill dolls, once for a short period of time, were also sold by Pleasant gepany but discontinued when Pleasant was bought by Mattel, who then made the Teen Trends dolls instead. The Hopscotch Hill dolls are 16", very slim, all vinyl and jointed. They are still very available on okay, new or used. However, nothing for them is available any longer from American Girl. The Hopscotch doll seems to still be very collectible with the younger girls.