Hi Mich!!! I am from Alabama too, Tuscaloosa in fact. How bout yourself? I have not met many from Alabama that like orchids or have any besides on occasional gift. Those look like vanda's to me, not sure what the last one is. I am sure someone will chime in on that one. I would continue to mist the roots once daily.
Do they turn green when you mist them?
Also, when you found the orchids where were they?
Did it have a humidifier, temperature gauge or light by them?
Did your father have central air ? The answer to these questions are important. Like myself I have central air, so I do not open and close the doors or windows to let hot or cold air inside because it would make my bill go up. If he had central air that tells me that he didn't open windows, ect to help care for the orchids. It also tells me the orchids there liked the temperature in there, unless he had a humidifier and or lights by the orchids. This way I can get a better idea of what type of plants they might be due to what conditions he was providing them with.
Look forward to hearing from you soon