CM does not have any lounge arrangements for *G nor CM J. I used the PP Hanaq lounge near gate 17 for my international departure. It was fairly good. Plenty of seating over two levels (not plenty of plugs, however). Fresh small plates of food as well as a fresh OJ machine. Bar looked well stocked - not top shelf, but not the cheap stuff either. (I did not partake.)

Note that Hanaq is next to Suma, which seems to be the lounge for all of the legacy airlines. UA was listed. I stopped in to ask if I could use it as a UA Club member. 'No'. I asked if I could use it as a *G, flying on a *A flight. 'No, only United flights in first class'.