Another 18xx podcast has emerged. Third one in last few months, actually.
Train Shuffling is made by the guys from the Board Game Informant youtube channel.
Other 18xx podcasts:
The Train Rush – https://thetrainrush.com/
Derailed – https://www.stitcher.com/podcast/christopher-kemp/derailed-an-18xx-podcast
Wheel Tapping – https://wheeltapping.libsyn.com/