Another update to this fun thread. The AutoTrain post above, made me a fan of T1D Wanderer. I watch his content fairly zealously in addition to Lonestar. Love both for different reasons - Lonestar is the young tech savvy guy who refers to train engines by their specific number, like a friend or relative, and displays the resiliency of youth which helps him maintain that positive outlook. T1D, also a very likeable traveler, operates strictly from the passenger point of view. Much of his content is Japan based, I think his wife is from there - but his US travel videos are mesmerizing. The link below is for his recent trip on the Texas Eagle! It is wonderful! He captures beautifully that feeling of time passing and distance traveled, with his window photography but also in a more personal way, for example you feel like you stepped off the train with him for one of the longer stops, and I got nervous when he left the train platform to go inside the station to look for an ATM.
He's also got a recent SW Chief trip on his channel that I missed earlier, going to watch now.