147 known values for skin with current usage counts:

1. default (21165× used)
2. red (16023× used)
3. green (10711× used)
4. follower (3779× used)
5. clown (1145× used)
6. trapper (942× used)
7. vampire (854× used)
8. lab_apprentice (797× used)
9. helmet_banana (555× used)
10. snowman (553× used)
11. og_white (471× used)
12. anniversary (444× used)
13. rural_fella (416× used)
14. cool_cap (410× used)
15. party_hat (396× used)
16. daisy (396× used)
17. gingerbread (311× used)
18. panda (232× used)
19. gift_box (228× used)
20. pumpkin (212× used)
21. monk (196× used)
22. black_dog (185× used)
23. og_purple (179× used)
24. dog (164× used)
25. builder (160× used)
26. anniversary_2 (157× used)
27. edm (155× used)
28. toaster (132× used)
29. tea_cup (122× used)
30. demon (121× used)
31. og_yellow (114× used)
32. og_pink (108× used)
33. cyborg_3 (93× used)
34. reindeer (92× used)
35. cyborg_1 (89× used)
36. elf (88× used)
37. grim_reaper (85× used)
38. green_spikes (82× used)
39. bad_cap (77× used)
40. detective (66× used)
41. wizard (65× used)
42. cubix (63× used)
43. evil_bot (61× used)
44. grey_cat (57× used)
45. mummy (53× used)
46. yeti (52× used)
47. cat (50× used)
48. headset (49× used)
49. spikes (49× used)
50. king (49× used)
51. joker (49× used)
52. peach (48× used)
53. mad_scientist (47× used)
54. security_bot (46× used)
55. sushi (43× used)
56. rplace (41× used)
57. narwhal (40× used)
58. fries (38× used)
59. angel (38× used)
60. parrot (37× used)
61. orca (37× used)
62. white_demon (36× used)
63. shades (36× used)
64. siren (36× used)
65. lunar_dragon (35× used)
66. ninja (34× used)
67. ghost (32× used)
68. bow_tie (31× used)
69. wolf (30× used)
70. country_nl (30× used)
71. murica (30× used)
72. eliminated (30× used)
73. cyborg_2 (29× used)
74. top_hat (27× used)
75. astronaut (25× used)
76. shark_attack (25× used)
77. devil (23× used)
78. festive_lights (21× used)
79. treasure_chest (20× used)
80. country_us (19× used)
81. alien (19× used)
82. country_de (16× used)
83. scuba_diver (16× used)
84. bunny_costume (15× used)
85. rabbit (15× used)
86. country_fr (15× used)
87. curious_bot (15× used)
88. blue_dinosaur (14× used)
89. tiger (14× used)
90. bee_costume (13× used)
91. bandit (13× used)
92. block (12× used)
93. whale (12× used)
94. country_gb (12× used)
95. country_au (12× used)
96. country_se (11× used)
97. pirate (11× used)
98. country_il (11× used)
99. ramen (10× used)
100. country_pl (10× used)
101. country_fi (10× used)
102. country_be (10× used)
103. carrot_costume (10× used)
104. cow (9× used)
105. boby (9× used)
106. country_it (9× used)
107. country_cz (9× used)
108. dinosaur (9× used)
109. country_no (8× used)
110. fairy (8× used)
111. leprechaun (8× used)
112. country_ro (7× used)
113. mark (7× used)
114. red_cocoa (7× used)
115. polar_bear (6× used)
116. country_ru (6× used)
117. unicorn (6× used)
118. country_gr (6× used)
119. monkey (6× used)
120. country_ca (6× used)
121. science_adept (6× used)
122. firefighter (5× used)
123. nutcracker (5× used)
124. country_es (5× used)
125. steampunk (5× used)
126. shape (5× used)
127. spy (5× used)
128. country_hu (4× used)
129. country_ch (4× used)
130. burger (4× used)
131. hamster (3× used)
132. popcorn (3× used)
133. country_si (3× used)
134. green_cocoa (3× used)
135. yellow_crown (3× used)
136. country_hr (3× used)
137. artist (2× used)
138. alice (2× used)
139. stinger (2× used)
140. laurel (2× used)
141. graffiti (1× used)
142. black_crown (1× used)
143. white_crown (1× used)
144. fossil (1× used)
145. mecha (1× used)
146. cardboard_box (1× used)
147. burglar (1× used)