Update 21 Feb
I feel that I have no choice but to add a list for the Closing Ceremony as well. Thanks to whoever changed the thread name for me!

As we old Olympics fans know, at the Closing Ceremony, the athletes all walk in together, and the only national distinctions are what athletes wear and the few honoured to bear the flag. Most NOCs choose their best-performing athletes or honour retiring greats in their sport. Unclear if some NOCs would repeat from the Opening Ceremony.
As there will not be an announcement for each country, I chose to use the same order as the NOCs entered in the Opening: