Location of "Demon" Type Monsters

[machnacki]

Does anyone know of a list that has a correlation between an area/location and the likelihood or frequency that "demon" type monsters populate it?

For example, if it can be shown that The Pit has a greater probability to spawn demons, it would be worthwhile to run this area repeatedly with the appropriate damage modifier gear.

[Crimson Bishop]

You can look here: http://www.battle.net/diablo2exp/monsters/

It doesn't show the specific areas they spawn in, only the acts. If you can remember all the monsters in an area then you can look them up there.

In the pits you will mostly find demons (fallen and rogues) but of course there are some undead (skeletons) as well.