AXRP by Daniel Filan from CHAI is great, and The Gradient is another good one with both AI safety and general interest AI topics.

• AXRP
• 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!