Similar comment to "name this orchid thread" in this case more than six thousand Oncidium Alliance Hybrid names in the RHS Register.

Your only chance is if is a widely copied orchid (mericlone). A close-up of a single bloom might help.

The flowers are really tiny

It looks like an Oncidium "Twinkle". Mine just started flowering, too! I'm excited: I have six spikes on it this year. Should be quite a show.

This is an older picture, when it was a much smaller plant!

Wow!! Beautiful plant!! I hope mine grows as yours, I'm new on orchids world hahaha. ;)