Because I manually download videos to watch on the bus or train (thanks Grayjay & NewPipe), most of my subscriptions are for long-form, often listenable content:
Retro Tech: Techmoan, Technology Connections, Posy, Janus Cycle, CRD, Ben Eater, DiodeGoneWild, pannenkoek2012, videolabguy, Adrian’s Digital Basement,The Science Elf, previously LGR and 8-Bit Guy/Keys
Science: Kuvina Saydaki, BobbyBroccoli, Numberphile, Computerphile, carykh
Tech News & Discussion (not always long-form): Louis Rossmann, Mental Outlaw, Brodie Robertson, SomeOrdinaryGamers, Asianometry, Atomic Shrimp, previously Thunderf00t
Urbanism: Not Just Bikes, Adam Something, Alan Fisher, Tramly, BritMonkey
D&D Story Narration: CritCrab, Puffin Forest
Bold channels are most underrated imo
So I can subscribe for 1 month, download all the exclusive content, and then turn my membership off/back on based on the value I think I’m getting?
media.ccc.de is a great specialized “streaming service” too, mostly supported by NewPipe (oddly not Grayjay yet). I can understand German decently so I don’t have issues with the bilingual content. If you like Chaos Congress talks, you can also try DEFCON and other ones available on YouTube but I didn’t feel like including any of them because they’re just uploads of slightly different kinds of media, much like HBO’s Last Week Tonight channel I also subscribe to.