Well, at first glance I see quite a few decent animals amongst the bunch.
Horse 1: Not a bad mare. 14 is a good age, and her height is handy. However, I am not a fan of her front pasterns. But they may not affect her.
Horse 2: I REALLY don't like her front feet! I would pass on her.
Horse 3: As you said you want something a little in the younger category, 17 is probably a little old for your taste.
Horse 4: I like this little one the most so far. She would be worth looking at.
Horse 5: Again, really really like this mare. She caught my eye when I first scrolled down the list. I would look out for her.
Horse 6: Eh. I don't like all the apparatus on her, and she looks over at the knee. She appears to be the only bandaged one, which I am viewing with suspicion.
Horse 8: Really quite nice, but I don't like the way she leans back on her heels in front. Maybe morgans are supposed to stand like that, so I don't know.
Horse 9: Does NOT look like a TB to me, and probably a bit old for your taste. Looking again, that horse is built like a tank, and I honestly think there is no way in hell that he is a TB. Cob more like. No TB traits that I can see.
Horse 10: Probably too small, depending on your height. Sweet though.
Horse 11: Again, probably a bit old.
Horse 12: I really like this horse, and think she would suit your needs.
Horse 13: Quite nice, but back at the knee.
Horse 14: Probably a bit old for you. Also extremely scruffy, and probably infested with worms.
Horse 15: Don't like his front legs, but bar that, he's really nice.
Horse 16: Lovely! But will probably be pretty pricey, from the description.
So a few horses there worth looking at I think.