1 - NYC P2 boxcab - elegant and classy (and scrapped - big surprise)
2 - NH streamlined EP's - freight and passenger
3 - PC (okay, PRR) E44 Bricks
4 - Because they remind me of each other so much: CMStP&P Joes; VGN
streamlined; GN streamlined (I forget the classes)
5 - and the PRR "Big Liz" 2-C-C-2 boxcab
Also-rans: NYC S-1/S-2/S-3 and the PRR L-5.
And the rest of them; electrics are cool.