I. The Four-in-hand Popularity: ***** Country: the most used in all countries II. The Windsor Knot Popularity: ***** Country: very popular in Australia, South America, etc. III. The Bow Tie Popularity: ***** Country: very popular in the United Kingdom, the United States, etc. IV. The Double Knot Popularity: *** Country: popular in Australia, Canada, Japon, etc. V. The Half Windsor Popularity: *** Country: fairly popular in the United Kingdom, Canada, etc. VI. The Small Knot Popularity: ** Country: fairly popular in China, etc.