Beautiful collection. I recognise Ludisia discolor and the macodes, (not sure if it's petola or sanderiana) but not the other species in photos 4 and 5.
I am definately jelous, even the species I have of yours look to be different clones that I'd happily add to my collection! I haven't tried Malaxis yet mostly because I don't know enough about their culture..
Third pic down looks more like an M. lowii to me more than petola or sanderiana... both the markings and the classic crisp white line around the leaves. Mine isn't that heavily veined but it could be a different clone or a similar species.