I think that Odontoglossum and Cochlioda were merged with Oncidium a few years ago, so technically the nothogenus Beallara no longer exists. The plants which used to be Beallara are now Aliceara (Brassia x Oncidium x Miltonia), although I see most growers still using the name Beallara.
But that being said, yes this plant is definitely an Oncidium alliance complex hybrid, and is probably Aliceara (or Beallara if you'd rather).