The Oncidium subtribe comprises quite a few Genera. They will hybridize with each other to create intergenerics. The most frequently used Genera in the group would be Oncidium, Odontoglossum, Cochlioda (combine these first three into a man made genus-Wilsonara-which is what I think your plant may be) others often used are Miltonia, Miltoniopsis, Brassia, Aspasia, Ada, and who knows what else.
By the way, P.A. Kiss, your Wildcat is a member of the man-made genus Colmanara. To add more confusion, many of these hybrids used a species Miltonia warscewiczii, which taxonomists have now moved out of the genus Miltonia, and placed it back into Oncidium, which means Miltonidiums using it are now straight up Oncidium hybrids!!!
Ain't orchids fun!
Trent