None of them are species - with the exception of the last which is a Paphiopedilum hybrid the rest are all Oncidium intergeneric hybrids (a mix of different genera all related to Onicidium).
They are all beautiful! I especially like the Paph, which I might add....I can't grow. I've killed dozens of them! I currently have one more "experimental" that I've applied some of the principles I've learned on OB. Still no new growth but at least it's not DYING. (yet) I'll worry about getting him to bloom AFTER I figure out how to keep him ALIVE and growing!