In browsing through the database's oncidium entries for which there were photos, I came across one which looks very similar.
Orchid (Oncidium Dancing Sunlight)

with this close-up of blooms. Draw your own conclusions about whether it's a match

The image you posted above is not Oncidium Dancing Sunlight. There are two differences that I see right off the bat.
In Oncidium Dancing Sunlight, the two side lobes of the lip, one right and one left of the cinnamon blotch on the lip, are much fuller and broader then the ones on arctangents flower.
The second difference I noticed is the little hooded column in the base of the lip. Dancing Sunlight's is much smaller looking like a little hooded monk. Acrtangents Oncidium has a larger hooded monk. Notice how green it is in the center.

What do I think about arctangents image? They are both hybrids of Oncidium, now Gomesa I think, varicosum. There is a variety of that Oncidium species called Oncidium varicosum 'Rogersi', that had fuller petals and sepals plus a larger lip when compared to the regular varicosum.
Unfortunately so many of these Oncidiums look so much alike due to the varicosum parent. I would be careful in making ID's without experience with this group.

Unfortunately I have to agree with Bill. Some of the Oncidium alliance, particularly Gomesa hybrids, tend to look very similar and I'm not sure it would be straightforward to identify them.

Thanks for the insight @Australis and @BigBill.
I wasn't really planning on moving the photo out of the general Oncidium database page.

A pleasure always!