This guy breaks down just how bad the layout of the new PHB is. The cross referencing is non-existent and the subsections seem to go in the order someone thought of them. I'm sadly unsurprised that they've not improved on any of these problems which existed in the original 5e PHB.
And according to RPGBot, after 10 years they still have no clue on how to make mounted combat work, despite Summon Greater Steed now being part of the Paladin class by default.