Here are a few podcasts whose initials might align with "RB":

: Hosted by Robert Croak and Austin Hankwitz, this podcast focuses on financial literacy and the habits of the wealthy.
: Hosted by Rich Roll, this podcast features in-depth conversations on wellness, sports, and cultural issues with a diverse range of guests.
: A music-focused podcast hosted by Rick Rubin, Malcolm Gladwell, Bruce Headlam, and Justin Richmond, offering insights into the creative process and stories of the music industry.

If you provide more context or details about what "RB" refers to, I can help you find more specific information.