Guess the Countries by Unknown Category #6

Top twenty countries. One secret category. Can you figure it out?
Quiz by Quizzer6794
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Last updated: July 31, 2016
First submittedJuly 31, 2016
Times taken472
Rating3.80
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UNKNOWN CATEGORY:
 
 
#
Country
615
United States
268
China
117
United Kingdom
103
Germany
90
India
88
Russia
54
Brazil
47
France
39
Canada
39
Italy
Countries with Most Billionaires
 
 
#
Country
33
Taiwan
32
Turkey
30
South Korea
29
Switzerland
27
Australia
24
Japan
23
Sweden
22
Indonesia
20
Netherlands
20
Spain
+1
Level 54
Oct 16, 2020
I typed the category without the word "most", but it didn't accept it. :(
+1
Level 64
Oct 16, 2020
It does work, maybe you misspelled it?