HKG in my opinion - on *G especially - is crying for lounge hoping. Every lounge got something the others don’t. SQ got Champagne, a bar, and some eat to order items. Buffet can be soso. But crowded and no „air“. UA got the best showers. Good beer choices (yes! A US American lounge wins on beers lol) and sometimes surprisingly good food options. Usually rather empty.

Thai wins on some Thai-style food options, ice cream (sorry SQ but your offer is way too mainstream) and being the most open air lounge (UA also is fine)

if you fly CA (one of the major *A carriers from HKG) their lounge wins on being by far being the best option for a nap due to it being one level down and no airport noise being there, plus comfy napping chairs. Food is mediocre though.