UP 8500 Turbine 75 car freight drag:
https://www.youtube.com/watch?v=FzXi3JIXnSk
SP AC-5 passenger train:
https://www.youtube.com/watch?v=6ilq8m7tZNc
UP Big Boy freight drag:
https://www.youtube.com/watch?v=TcMZHWabwYU&t=3s
D&RGW L-131 pulling Zephyr passenger train:
https://www.youtube.com/watch?v=vuhcqG-2RsI
NP Z-8 freight drag (best sounding engine I have):
https://www.youtube.com/watch?v=A3-JVFtC94U