Aloe rubroviolacea, Agave 'Kissho Kan' on the extreme right; Senecio mandraliscae, and various Echeverias.
I've posted one or two photos of this succulent tapestry at Roger's before. Sorry for the repetition: I wanted to get pictures of the whole bed all into one blog post I could study and refer to in future.
Center top Agave is A. weberi 'Arizona Star'. Agave attenuata 'Ray of Light' at extreme right. Aloe spinosissimas to the left of 'Ray of Light'
A circle of Crassula capitella 'Campfire' at lower center, surrounded by Echeveria nodulosa; Dyckias to the Crassula's above right, possibly Echeveria 'Etna' to the right of the Dyckias, a half circle of Echeveria 'Perle von Nuremburg' below the pot, Agave lophantha 'Quadricolor' below the Golden Barrel cactus. Agave weberi 'Arizona Star' is surrounded by a mass of Aeonium 'Kiwi'.
A trio of Golden Barrel cactus, Echinocactus grusonii, with Agave lophantha 'Quadricolor' below, and an Echeveria below that. Above the Echinocactus is green Senecio barbertonicus.
Yucca 'Bright Star' to the right of the tree trunk. This bed contains two large pine trees that provide shade and needle drop. I like the arcs and swoops of identical plants, but the circles around the Cacti, not so much.
Beaucarnea recurvata (Ponytail "palm"), Euphorbia tirucalli, gravel, river stones, Agave 'Karas Stripes'.
A garden center has the great advantage of not worrying about the eventual size of the plants, nor about the cost, which is considerable. At summer's end no doubt it will all be pulled out and replaced with something else. The plants will probably be reused elsewhere.