The Towers, the Wheel, Dragonbreaks are all canon due to the recent questchains.
But, CHIM, Amaranth and all that 5th Era/C0da nonsense is no longer canon or it was rewritten to actually make sense. @Darkcaster224
Micheal Kirkbride got that filter he desperately needed (thanks to those current writers), because without a filter...Kirkbride's lore on metaphysics is nonsense, absolute rubbish. You get crazy crap like KINMUNE or the Magna-Ge...Give that a read and the only thing you'll think is, "what is this man on?"
On topic though, my favorite lore is actually mundane cultural lore. While I know a lot about the metaphysics, I feel the mundane culture stuff tends to get neglected and ESO has been doing a good job covering that 'menial' stuff.
I feel like I'm still lost, but the lore. Like I'm not sure if I should have started the Main Quest. because I've completely ignored
"Talk to the hooded figure"
I might have done it backwards, but what I wanted to do was have my character Achieve the Hero of Daggerfall Covenant achievement.
I think I did it backwards... I started in Storm Haven, then Rivenspire, to Alik'r, then to Bangkori. Was I suppose to do the Glenumbra Story Arc before Storm Haven? Oh well, cause I thought I'd have him ride to Daggerfall, and start the main quest after I did everything else.
Ancient civilizations such as Ayleid, Dwemer, Chimer, Aldmer, etc.
For me I love the most the subjects that touch upon Cosmology in ESO