There's also a bunch of hobby machinists I watch, though I've not found many that show day-to-day professional work like CEE does. Maybe Abom79, but he focuses on smaller home projects, not so much industry type stuff.
Watch Fat Electrician, he does a lot of history stuff that is well presented and entertaining. Lots of highlighting exceptional members of the military that had plot armor or were the main character. His second channel does highlights of companies like Arizona Iced Tea, Chik-Fil-a, etc.
Yeah, the iPhone microsystem is very restrictive. I'm not one to sing praises for samsung (they're just as bad in many ways), but I can still install apks for custom apps like tubetube, another safer YouTube frontend
I can't verify anything, but there seem to be some (albeit limited) alternatives like vuetube and yattee still floating around for ios
I've got a lot of woodtube like Paul Sellers and Wood By Wright, plus a lot of stuff about Subnautica and RedLetterMedia. Also SEA, Astrum and History For Granite, my fall asleep documentary team.