Hi Joe. 1 and 3 are female Northern 'Baltimore' Orioles; Bullock's and Audubon's Orioles are western and mexican species respectively. Number 2 looks to be a flycatcher from the empidonax family. If the yellow on the belly was as predominant in real life as it is in the picture, my guess would be Yellow-bellied Flycatcher, but the 'empids' are notoriously difficult to identify without hearing their song.
Try the Cornell website called 'All about birds' to hear the different songs.
Iain