In-ear headphones from that both fit well and have good sound isolation. These could work equally well for music and podcasts.
From Amazon
AV Link Ear Shots SE: True Wireless Earphones & Charging Case
CommsAndSound
Wireless Earphones with Power Case, Avlink Ear Shots Se True
GAK
AV:Link AV Link Ear Shots SE True Wireless Earphones and Power Case Headphones