Other podcasts I'd recommend: ADSP [1] (if you're into programming), 2.5 admins [2] (if you're into computers). But I have no recommendations about hardware design because AFAIK the podcasts you mention and what Oxide is doing are pretty unique.
[1] Algorithms + Data Structures = Programs https://adspthepodcast.com/
[2] Allan Jude, Jim Salter, Joe Ressington https://2.5admins.com/
