157 known values for skin with current usage counts:

1. default (21969× used)
2. red (16607× used)
3. green (11116× used)
4. follower (4170× used)
5. clown (1149× used)
6. trapper (988× used)
7. vampire (870× used)
8. lab_apprentice (800× used)
9. snowman (553× used)
10. helmet_banana (552× used)
11. cool_cap (529× used)
12. og_white (473× used)
13. daisy (465× used)
14. anniversary (452× used)
15. rural_fella (412× used)
16. party_hat (388× used)
17. gingerbread (306× used)
18. panda (228× used)
19. gift_box (222× used)
20. monk (214× used)
21. pumpkin (212× used)
22. black_dog (193× used)
23. og_purple (183× used)
24. dog (166× used)
25. anniversary_2 (163× used)
26. builder (161× used)
27. edm (157× used)
28. toaster (138× used)
29. demon (132× used)
30. tea_cup (123× used)
31. og_yellow (118× used)
32. cyborg_3 (110× used)
33. og_pink (109× used)
34. cyborg_1 (91× used)
35. grim_reaper (90× used)
36. green_spikes (89× used)
37. reindeer (88× used)
38. elf (85× used)
39. bad_cap (80× used)
40. detective (73× used)
41. wizard (68× used)
42. joker (64× used)
43. evil_bot (63× used)
44. king (62× used)
45. cubix (62× used)
46. narwhal (61× used)
47. grey_cat (59× used)
48. sushi (58× used)
49. mad_scientist (57× used)
50. orca (56× used)
51. mummy (51× used)
52. cat (51× used)
53. spikes (50× used)
54. yeti (50× used)
55. headset (49× used)
56. peach (47× used)
57. security_bot (44× used)
58. parrot (44× used)
59. fries (42× used)
60. anniversary_3 (40× used)
61. rplace (39× used)
62. eliminated (38× used)
63. white_demon (37× used)
64. siren (36× used)
65. shades (35× used)
66. angel (35× used)
67. lunar_dragon (35× used)
68. ninja (34× used)
69. murica (34× used)
70. wolf (33× used)
71. bow_tie (33× used)
72. country_nl (30× used)
73. cyborg_2 (29× used)
74. ghost (28× used)
75. top_hat (28× used)
76. astronaut (27× used)
77. shark_attack (25× used)
78. alien (24× used)
79. devil (23× used)
80. festive_lights (21× used)
81. whale (21× used)
82. bee_costume (20× used)
83. treasure_chest (20× used)
84. ramen (19× used)
85. country_us (19× used)
86. block (18× used)
87. apple (18× used)
88. rabbit (18× used)
89. icefox (18× used)
90. country_de (17× used)
91. monkey (16× used)
92. bunny_costume (16× used)
93. scuba_diver (15× used)
94. curious_bot (15× used)
95. blue_dinosaur (15× used)
96. bandit (14× used)
97. country_fr (14× used)
98. cow (14× used)
99. tiger (14× used)
100. leprechaun (13× used)
101. boby (13× used)
102. country_pl (12× used)
103. science_adept (12× used)
104. pirate (12× used)
105. country_se (12× used)
106. country_il (11× used)
107. firefox (11× used)
108. country_gb (11× used)
109. mecha (11× used)
110. country_au (11× used)
111. carrot_costume (11× used)
112. spy (10× used)
113. shape (10× used)
114. dinosaur (10× used)
115. country_be (10× used)
116. burger (10× used)
117. steampunk (10× used)
118. country_fi (9× used)
119. fairy (8× used)
120. mark (8× used)
121. country_no (7× used)
122. country_cz (7× used)
123. red_cocoa (7× used)
124. burglar (7× used)
125. country_ro (7× used)
126. country_it (6× used)
127. nutcracker (6× used)
128. banana (6× used)
129. country_gr (6× used)
130. country_es (6× used)
131. polar_bear (6× used)
132. hamster (6× used)
133. alice (5× used)
134. country_ca (5× used)
135. unicorn (5× used)
136. pig (5× used)
137. fossil (4× used)
138. country_hu (4× used)
139. firefighter (4× used)
140. country_ch (4× used)
141. green_cocoa (4× used)
142. country_ru (4× used)
143. graffiti (4× used)
144. country_hr (3× used)
145. yellow_crown (3× used)
146. jailbreak (3× used)
147. cardboard_box (3× used)
148. popcorn (3× used)
149. pineapple (3× used)
150. country_si (3× used)
151. white_crown (2× used)
152. blue_crown (2× used)
153. black_crown (1× used)
154. alfie (1× used)
155. laurel (1× used)
156. buffalo (1× used)
157. stinger (1× used)