farming specific beasts to tame

i am looking for a Rhoa with good skills, but can hardly find them anymore.

grassland - savannah/oasis were decent, but seemed to have slowed down a lot since last patch.


boars are everywhere
spiders are appearing a lot in trials of sekhemas
The stegosaurus in the temple of chaos
Mr. 4armed smash gorilla in the djungle
Chimeras (kinda as rare) but also grassland/savannah


is there a similar area for Rhoas, where you literally go in and have 2 or 3 rhoa elites?
If you have suggestions for other beasts and locations, post them, in case someone looks for them.