The orange one is probably a hybrid called Oncostele Catatante. It has gone through some name changes so you may also see it as Colmanara Catatante or Odontocidium Catatante.
As with many orchid hybrids, it is impossible to be absolutely sure with an identification of an unknown. There are just too many similar hybrids out there. It definitely is some kind of Oncidium alliance intergeneric hybrid though. The other one is too.