The first one, I'd say, is definitely Arabian... Maybe a smidge of QH, but she looks so much like my mare who's full arab. As for the second mare, she is just gorgeous!!! We should make that a breed lol.
The first probably has a lot of Arab in her. Unless they are very well bred, many don't get a very refined head, and I've had a reg. Arab gelding that looked a great deal like her.
The second looks like a Standardbred X, to me.