They are all very different, different personalities. The Jourdaniana's have purple flowers as do the L.williamsii decipiens. These are also rare and expensive. The El Nunez is Mexican. The top photo is a small Jourdaniana, then a L.Diffusa Koeresii and a L.williamsii La Paloma.
Withing my collection I have a variety of plants ranging from 6-28 years old and also some babies from 6 months to 4 years old. All of which are for sale but I'd have to brace myself before I sell any as they are like my pets! Lol
Magick Brad.