Came across this site on AoE farming (haven't personally look into the listed locations). These locations are not really focused on HyperSpawns but on locations with lots of mobs that are group-able for AoE. Some may actually have a HyperSpawn within them:

https://www.wowclassicaoe.com/list.html

That link is for a text based summary. There site has multiple ways of showing things graphically on the maps as well and rating areas via color and what not.

You could look also into the Hyperspawns as well though some of those locations only have a few mobs that come back real quickly so great for fast killing 1 by 1 but not necessarily great for AoE.