My favorite episodes were Stevan Apter, Leslie Goldsmith, Lib Gibson, Rob Pike and Jeremy Howard. If you want to go deep into the concepts focus on the tacit episodes or the ones with John Earnest or Aaron Hsu. There are transcripts with each episode so you can always read if your time is that valuable. https://www.arraycast.com/episodes

Full disclosure: I am on the ArrayCast

Did you mean generals of array languages? I've only listened to the first 3 episodes so far and the Rob Pike episode[1] I mentioned. I have decades of experience in the popular programming languages and Lisp and some functional languages, but I'm new to array languages and I think I am the target audience.

If you're already experienced with array languages I'm not confident to recommend any particular episodes yet. You might find the Rob Pike/Ivy episode entertaining but maybe not informative. Rob is not an array language expert (he says this in the episode) but he made Ivy partly from nostalgia of APL in his early days. His recollection of that era I found good to listen to.

[1] https://www.arraycast.com/episodes/episode60-rob-pike