Technology Connections, tomm Scott, smarter everyday, and similar channels
star wars/trek/gate lore and detail videos from people like, certifiably I game, metanerdz lore, gateworld
Fantasy world stuff like WH40K and LOTR, leutin09 and nerd of the rings, installation00 and hidden Xperia for halo
I've started watching movie breakdowns of varying types for movies I loved from the 80s onwards from people like media zealot, heavy spoilers, the deep dive
Metal/woodworking videos from people like That Works, Torbjörn Åhman, shurap, michaelcthulu
Shop videos of machining or fabrication from places like clickspring, make it extreme, and This Old Tony
History Time, cgp Grey, Sam o Nella, Bill wurtz
random genres here and there like rctestflite, casual navigation, daniel thrasher, huggbees...
There are clear trends and then you get some random extras.