Beyond the lack of smartphones/earbuds, the two big things that stick out to me:

1. The cars. Sometime in the 90s and 00s cars started becoming a lot less boxy (compare the Camry from 1990 to 2000 to 2010 to see this).

2. Way more formal dress wear. In today's NYC financial district you plenty of jeans, and even a lot of financial professionals have given up the suits and ties. The financial district today also has more tech workers, and I believe more tourists.