Below, you will find a link to a cheat sheet to a spreadsheet that I created to assist in monster selection for open groups. I found that having all of this information in one place made it much easier for the OL when determining what open groups to employ in given encounters.
It includes all of the monsters from D2e base game, the D1e conversion kit, Lair of the Wyrm, and Labyrinth of Ruin. Since it took a bunch of time to create, I thought I would share it with all of you in case someone else would find it helpful. Enjoy.
Here is the link: https://docs.google....dit?usp=sharing