Spitz ~ first photo, first plant on left is probably S. Fischeri formerly called S. singularis
http://www.glasshouseworks.com...
The third from the left appears to be S. Francisii
http://botanicalgrowers-store....
The fourth is in the bromeliad family and known as Cryptanthus commonly called an earth star. But you probably knew that and know which one also.
The second photo in your post is indeed a S. cylindrica but it would be difficult to know exactly which one.
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