More fodder for discussion:
https://www.cbsnews.com/news/amazons-hq2-cities-second-headquarters-these-cities-are-contenders/
You can take this list of 26 US cities (from cbsnews) and the mentioned criteria expressed by Amazon and easily cut this list in half.
Metro area State Population Percent with bachelor's degree
New York-Newark-Jersey City NY 20,153,634 38.40
Los Angeles-Long Beach-Anaheim CA 13,310,447 32.70
Chicago-Naperville-Elgin IL 9,512,999 36.00
Dallas-Fort Worth-Arlington TX 7,233,323 33.40
Washington-Arlington-Alexandria DC 6,131,977 49.30
Philadelphia-Camden-Wilmington PA 6,070,500 36.00
Atlanta-Sandy Springs-Roswell GA 5,789,700 37.00
Boston-Cambridge-Newton MA 4,794,447 46.00
San Francisco-Oakland-Hayward CA 4,679,166 47.20
Minneapolis-St. Paul-Bloomington MN 3,551,036 40.30
San Diego-Carlsbad CA 3,317,749 37.20
Denver-Aurora-Lakewood CO 2,853,077 41.80
Baltimore-Columbia-Towson MD 2,798,886 38.60
Charlotte-Concord-Gastonia NC 2,474,314 33.50
Portland-Vancouver-Hillsboro OR 2,424,955 37.90
Pittsburgh PA 2,342,299 33.00
Kansas City MO 2,104,509 35.80
Austin-Round Rock TX 2,056,405 42.60
Columbus OH 2,041,520 35.10
San Jose-Sunnyvale-Santa Clara CA 1,978,816 48.70
Nashville-Davidson TN 1,865,298 33.60
Milwaukee-Waukesha-West Allis WI 1,572,482 33.90
Raleigh NC 1,302,946 44.40
Richmond VA 1,281,708 35.20
Hartford-West Hartford CT 1,206,836 38.30
Rochester NY 1,078,879 37.30