Drive to Work [1] is a great podcast. Most of it is, of course, about MtG, but there are a lot of episodes about various things like writing, creativity, or communication. Mark Rosewater is the head designer, which means that he is responsible for creating the general structure of a set [2] and not the various stages of fine tuning that happen later on.

So there is a lot of content about designing for humans and little about detailed number-crunching and game balance.

He also explains most terminology and concepts, so a passing familiarity should be more than enough to understand the MtG-related content.

Also, no ads.

[1] https://mtg.gamepedia.com/Drive_to_Work

[2] Cards are released in groups, called sets. A set (usually) takes place on a particular world and is connected to a part of the larger story, which are reflected in its gameplay.