Mike: I'm not sure but your first cactus in the 2nd row of pictures looks a lot like Cereus repandus, commonly called Apple Cactus. A couple of months ago someone identified one growing in my yard. If your's is the Apple Cactus, it's a nocturnal bloomer with gorgeous, fragrant flowers that only last one night.
I'm very interested in the Philodendron? in the single photo, seventh row down!