Example LFG tooltip when looking to join a group. (Only the leader's history will be shown, even if there are others in the group you have grouped with in the past, much like only the leader's name is shown by Blizzard).
Example output to chat window (player names have been blurred).
Example regular (i.e. non-LFG) tooltip
Comps tab of the history viewer
Player tab of the history viewer
Map tab of the history viewer
Example LFG tooltip for applicant when hosting a group