https://www.youtube.com/user/PetersenMuseum/videos
The Seattle flight museum also started a series where the main curator would talk about individual planes in long format, way better experience than looking at photos online.
https://www.youtube.com/channel/UCda1wjNf7JaYgx9ukXRqgIQ
Those are just the ones I noticed as an Aviation and Automobile enthusiast. If anyone knows others please share ;_;