The beast and cavedale are both rocky and maybe ‘not for novices’ but neither is really the kind of decent where you have to measure it in dabs. Especially on modern trail/enduro bikes.
Cavedale in winter is particulalry fun, just dont do it if it’s been below zero or snowing as the narrow bit through the gate doesn’t defrost untill the spring and also happens to be the steepest!
Other stuff thats a challenge:
Packhorse trail off stanage.
Blacka Moor / Dore drops, some trails more than others and weather dependant, another one thats really good fun over the winter but Ive not ridden it for a few years since it became popular.
Cut gate to langset resevoir. Not hugely technical, but a good challenge to learn as a lot of it’s sunken so the trail itself is blind.