https://dnd.wizards.com/articles/sag...ure-evolutions
Given that, I think the Boots would work, Remarkable Athlete does not (specifically calls out "long jump"), second story work does not (same reason, but with "running jump"), Tiger Totem does not (same reason), and athlete feat does not (same reason).Is Rabbit Hop a high jump or a long jump?
The jump of Rabbit Hop is neither a high jump nor a long jump. If it were either, its text would say so.
Does the jump spell benefit Rabbit Hop?
Yes, the jump spell can affect the jump distance of Rabbit Hop. If you cast that spell on a harengon, enjoy the magnificent leaps!