Nice looking plants, Paul. The bottom are Lithops and friends, of course. Several different varieties there.
Sixth from the top with the carnucles is, I believe, either Echeveria 'Etna' or another hybrid of Ech. gibbiflora.
Ruffled Ech might be E. 'Ruffles' (lol).
Red flowers are on Euphorbia milii of some variety, perhaps.
I believe the top photo is Ech. hybrid 'Topsy Turvy'.
Cacti aren't really my thing but I do like them.
