Question about the Replay Feature of Warcraft Logs

Is there a way to find in which group number each person was in a raid? I noticed that the replay feature puts them in another order. It’s important because it might be related to boss mechanics behavior.

Nope. Logs don’t tell me what group you were in.

I just realized though. You can probably detect that via Prayer of Healing or other spells of that sort, if available.