AXRP by Daniel Filan from CHAI is great, and The Gradient is another good one with both AI safety and general interest AI topics.
Nonlinear Library: Alignment Forum
Towards Data Science (the podcast has had an AI safety skew since 2020)
Alignment Newsletter Podcast
Aside from those already mentioned:
The Inside View has a couple of alignment relevant episodes so far.
These two episodes of Machine Learning Street Talk.
FLI has some stuff.
+1 to AXRP!