Two things to clarify
:
The names Phalaenopsis and Dendrobium are not species, they are the genera (singular genus) that these orchids belong to. And none of the 3 orchids pictured are actually species, they are hybrids, so what you are looking for is the hybrid name (species names are lower case and italicized, while hybrid names are written with each part of the name in caps). An example of a species is
Phalaenopsis equestris while a hybrid example is Phal. Zuma's Pixie.
Second, if a hybrid is not named, you can't ever truly know what the hybrid name is (you can make decent guesses sometimes though, but certain parents seem to always impart their characteristics on offspring and so many offspring that share just one parent may seem virtually identical). That's because, especially with Phals and Dens, there are so many hybrids that are virtually identical, as well as the fact that the same hybrids (offspring from same 2 parents) can look quite different from each other (just like humans siblings may look quite similar or very different).
All of this is just meant to inform
, as you'll come across this system as you read or learn about orchids. And it doesn't matter if you don't know the exact name of your hybrid, as these types of hybrids can take pretty much standard Phal care and phal-type Den. care, such as recommended on the AOS website. Whether you know the name or not does make having them less enjoyable, I have several NOID hybrids myself.