Pic A. looks a lot like a Lockhartia....difficult to tell without flowers,although the "plaited" growth matches....
and B. maybe a chiloschista sp.???
Just a guess on that one
Last one looks like a phal to me. Nice pics!
B=Gastrochilus? Maybe, wild guess.
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All that is gold does not glitter,
Not all those who wander are lost;
The old that is strong does not wither,
Deep roots are not reached by the frost.
-J.R.R. Tolkien, LOTR, Fellowship of the Ring