Hi, my opinion here. I may describe why I think each team is there later.
S TIER (strong title contenders): South Korea, United States, Poland, Germany
A TIER (runner-ups for the championship): China, Netherlands, Taiwan, (Austria?)
B TIER (possible surprises): Australia, Brazil, Canada, France, Norway, Japan, Russia, Sweden, Hong Kong, United Kingdom
C TIER (can go far if they overperform): Argentina, Finland, Lithuania, Thailand, Ukraine, Malaysia, (Italy?), (Mexico?)
D TIER (needs to overperform AND other teams to underperform): Greece, Latvia, New Zealand, Portugal, Singapore, (Philippines?)
hope i'm not underrating/overrating anyone, i'll have a well-written post explaining my opinion later :p