156 known values for skin with current usage counts:

1. default (21714× used)
2. red (16429× used)
3. green (11016× used)
4. follower (4030× used)
5. clown (1138× used)
6. trapper (944× used)
7. vampire (859× used)
8. lab_apprentice (799× used)
9. snowman (559× used)
10. helmet_banana (557× used)
11. og_white (472× used)
12. anniversary (446× used)
13. cool_cap (414× used)
14. rural_fella (414× used)
15. party_hat (394× used)
16. daisy (391× used)
17. gingerbread (305× used)
18. panda (232× used)
19. gift_box (225× used)
20. pumpkin (213× used)
21. monk (205× used)
22. black_dog (192× used)
23. og_purple (183× used)
24. dog (167× used)
25. anniversary_2 (161× used)
26. builder (160× used)
27. edm (154× used)
28. toaster (137× used)
29. demon (126× used)
30. tea_cup (121× used)
31. og_yellow (115× used)
32. og_pink (107× used)
33. cyborg_3 (103× used)
34. reindeer (89× used)
35. cyborg_1 (88× used)
36. elf (88× used)
37. grim_reaper (85× used)
38. green_spikes (85× used)
39. bad_cap (79× used)
40. detective (70× used)
41. wizard (66× used)
42. cubix (62× used)
43. evil_bot (60× used)
44. joker (59× used)
45. king (58× used)
46. grey_cat (58× used)
47. sushi (56× used)
48. mad_scientist (54× used)
49. orca (53× used)
50. narwhal (53× used)
51. mummy (52× used)
52. headset (51× used)
53. cat (50× used)
54. spikes (49× used)
55. peach (48× used)
56. anniversary_3 (48× used)
57. yeti (47× used)
58. security_bot (43× used)
59. parrot (42× used)
60. rplace (41× used)
61. white_demon (39× used)
62. lunar_dragon (37× used)
63. fries (37× used)
64. ninja (34× used)
65. murica (34× used)
66. bow_tie (33× used)
67. siren (33× used)
68. shades (32× used)
69. eliminated (32× used)
70. angel (32× used)
71. ghost (31× used)
72. country_nl (30× used)
73. wolf (29× used)
74. top_hat (27× used)
75. astronaut (27× used)
76. cyborg_2 (26× used)
77. shark_attack (24× used)
78. devil (22× used)
79. festive_lights (22× used)
80. alien (22× used)
81. treasure_chest (20× used)
82. rabbit (18× used)
83. country_us (17× used)
84. bee_costume (17× used)
85. scuba_diver (16× used)
86. curious_bot (15× used)
87. bunny_costume (15× used)
88. whale (15× used)
89. block (15× used)
90. apple (15× used)
91. country_de (15× used)
92. ramen (14× used)
93. blue_dinosaur (14× used)
94. bandit (14× used)
95. tiger (14× used)
96. country_fr (14× used)
97. country_il (13× used)
98. leprechaun (12× used)
99. country_be (12× used)
100. cow (12× used)
101. dinosaur (11× used)
102. carrot_costume (11× used)
103. pirate (11× used)
104. country_se (11× used)
105. country_gb (11× used)
106. monkey (11× used)
107. country_au (10× used)
108. country_pl (10× used)
109. boby (9× used)
110. country_fi (9× used)
111. science_adept (8× used)
112. red_cocoa (8× used)
113. country_no (8× used)
114. fairy (8× used)
115. spy (8× used)
116. country_cz (8× used)
117. shape (7× used)
118. icefox (7× used)
119. graffiti (7× used)
120. country_ro (7× used)
121. country_it (7× used)
122. country_es (7× used)
123. mecha (7× used)
124. polar_bear (6× used)
125. unicorn (6× used)
126. firefox (6× used)
127. country_gr (6× used)
128. steampunk (6× used)
129. mark (6× used)
130. country_ca (5× used)
131. burger (5× used)
132. nutcracker (5× used)
133. country_hu (5× used)
134. firefighter (5× used)
135. alice (4× used)
136. country_ch (4× used)
137. pineapple (4× used)
138. country_si (4× used)
139. green_cocoa (4× used)
140. country_ru (4× used)
141. cardboard_box (3× used)
142. popcorn (3× used)
143. banana (3× used)
144. country_hr (3× used)
145. alfie (2× used)
146. jailbreak (2× used)
147. burglar (2× used)
148. hamster (2× used)
149. yellow_crown (2× used)
150. black_crown (2× used)
151. fossil (2× used)
152. cowboy (1× used)
153. pig (1× used)
154. blue_crown (1× used)
155. artist (1× used)
156. stinger (1× used)