Nice work! (I love NY!) My favorite is the first. Well done! I also love the BMW i8 and the Camry taxi shot.
Given this is the Critique Corner, I'll comment on the photo with your sons. In the first photo, it was clear the older couple is the subject. Very nice! In contrast, in the shot with your sons, they are your subject to you because they are special to you, but almost no one else will see them as your subject. I didn't notice them until you mentioned them. What I saw was the WTC angled too much to the left (when rotated clockwise, it could still be angled to the left as long as it is balanced with the opposite buildings angled to the right), along with people on the street. Also, while a photo of them turned away can work, to the unconnected observer these are just the backsides of two kids, hidden in a photo with a facing adult couple and an iconic cityscape. You can have your sons facing away with the skyline in the background, but it should be clear they are the subject. Observers' eyes, not just Mom's eyes, should go directly to them. To me, they're lost in the photo.
I know how it is with kids. I work hard to get good shots of our daughter! It's easy for me to see what others might not, but in a photo I'm not there to explain to the observer what is important. The photo has to stand by itself.
You have nice work! I hope this helps.