oncidium cebolleta and someone else?

[jrguevar]

Hello,
I would like to have a second opinion on my two plants, at first I thought they were the same type (cebolleta) just by the bulb shape, but then I put them both to take a picture and started noticing some differences between the flowers, dont know if I am dealing with two types of plants or its just my imagination now. Anyway I would appreciate a second opinion, thanks in advance!

[No-Pro-mwa]

I have not seen one like this but I'll give you a bump.