They are the Milano slim fit 16" collar, 34" sleeve. One of the white shirts is a french cuff and requires cufflinks to wear, the other three are traditional cuffs.
Brooks Brothers Slim Fit Men’s 16-32 Light Pink Dress Shirt
Brooks Brothers Men's Dress Shirt 17.5 - 34 Blue Stripe
Brooks Brothers Regent/346 Dress Shirt 16.5-4/5 Lot Of 2 Striped Button Down
Brooks Brothers Mens Regent Dress Shirt 16-4/5 Blue Plaid Button Up Long Sleeve
Jos A. Bank Traveler Tech Purple Gingham Dress Shirts, 16.5-34
Brooks Brothers Mens White Dress Shirt, 18-34 Slim fit Non-Iron