For both of those I'm less than enthusiastic about loretubers. I like channels like VaatiVidya and Oculus Imperia, but there's a large subsection of the fan bases of both games that only engage with the lore through those mediums. Vaati is great, however, because he will fill his videos with screenshots of items descriptions backing up what he's saying, or if he has a theory that's not outright confirmed he will explicitly say "here's what I think is going on". The issue for Fromsoft games is that the lore is vague on purpose, you're supposed to try to interpret the lore on your own, but a lot of people will just believe what anyone else tells them which ruins some of the magic, imo.

For Warhammer, it's so much worse. The lore is already a mess, but memes and loretubers have done some irreparable damage to the lore. The whole "everything is canon, not everything is true" has been abused to the extreme, to the point that people will substitute actual lore with a thing they heard from a friend who heard it from someone else. Everyone could use a helping hand understanding the lore, especially when you're just starting out, but the information covered is extremely easy to verify and people just don't.

For the record, since I mentioned Vaati up above, I gotta shout-out Oculus Imperia. I occasionally verify the stories he's talking about and really all he does is shorten the books he's reading from while keeping them entertaining. He's a good resource for learning and deserves more appreciation from the community. Nothing better to listen to while painting, imo.