Thanks Steve,
The ones in the white polystyrene trays are hybrids, they are basically for farmers, and it's cheaper for them this way.
While the ones in plastic pots (Upper left corner) if I remember correctly are Cherokee Purple and S.Marzano 3, it's better presentation for growers who visits our shop, and require a couple of seedlings only.
Last time I've checked, Black cherries were selling like hot muffins, even some farmers requested them in polystyrene trays