the first one is severely etoliated! it needs much more sun than it's been getting. should look more like a rosette in it's growth pattern!!
not sure if it's a crassula or an echeveria or a graptopetalum or a cross. needs MUCH more sun, though, to grow properly!!
the second one looks like a crassula. could possibly be p. afra - their stems are usually more woody, though.
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zone 6b