Only a handful of E8s were ever made, but at least they were ordered to head up streamliners
496 E-8s were built, 450 A's, 46 B's, certainly more than a handful. E-9s, not so much as passenger travel was tailing off by the time that model was introduced.
My favorite locomotive of all time is the EMD FL9. It's the longest of all F units and one of the longest surviving in mainline service, about 50 years by the time the last one was retired. New Haven FL9 2059 was the last of the F units, built in 1960.
5 axles for weight distribution, dual-mode to run either as a diesel or an electric and the flashy McGinnis paint job made these engines one of a kind. I took many trips to NYC behind one of these engines and if I was fortunate enough to get a seat in the first coach, I got to experience the diesel to electric changeover as the train decended into the tunnel leading to GCT.