Hi ;
The first 2 are obviously an Oncidium sp..Should not be too hard to pin down,those aborted flower bracts are very distinctive.
The other is prob. a Sobralia sp.,although the bract is unusuall.
Keep posting photos, please!
Spiro
#1, 2 - Oncidium obryzantum or heteranthum (very hard to tell from the picture)
#2, 3 - Sobralia klotzcheana or virginalis (very hard to tell from the picture)