186 known values for skin with current usage counts:

1. default (22668× used)
2. red (16886× used)
3. green (11292× used)
4. follower (4423× used)
5. cool_cap (1507× used)
6. clown (1201× used)
7. trapper (1192× used)
8. daisy (933× used)
9. vampire (879× used)
10. lab_apprentice (801× used)
11. helmet_banana (554× used)
12. snowman (551× used)
13. og_white (475× used)
14. anniversary (453× used)
15. rural_fella (418× used)
16. party_hat (405× used)
17. gingerbread (306× used)
18. panda (227× used)
19. gift_box (223× used)
20. monk (217× used)
21. pumpkin (213× used)
22. black_dog (198× used)
23. og_purple (185× used)
24. dog (170× used)
25. builder (164× used)
26. anniversary_2 (161× used)
27. edm (160× used)
28. demon (143× used)
29. toaster (142× used)
30. tea_cup (129× used)
31. og_yellow (119× used)
32. cyborg_3 (109× used)
33. og_pink (108× used)
34. bad_cap (98× used)
35. cyborg_1 (91× used)
36. reindeer (89× used)
37. grim_reaper (89× used)
38. green_spikes (88× used)
39. elf (82× used)
40. evil_bot (79× used)
41. detective (74× used)
42. king (71× used)
43. eliminated (70× used)
44. wizard (68× used)
45. orca (65× used)
46. joker (64× used)
47. grey_cat (64× used)
48. mad_scientist (63× used)
49. narwhal (63× used)
50. shades (61× used)
51. cubix (61× used)
52. white_demon (59× used)
53. headset (55× used)
54. rplace (54× used)
55. spikes (54× used)
56. sushi (53× used)
57. cat (51× used)
58. yeti (51× used)
59. peach (50× used)
60. parrot (49× used)
61. mummy (49× used)
62. angel (48× used)
63. security_bot (43× used)
64. murica (43× used)
65. icefox (41× used)
66. anniversary_3 (41× used)
67. fries (40× used)
68. alien (40× used)
69. ninja (39× used)
70. lunar_dragon (38× used)
71. devil (37× used)
72. siren (36× used)
73. bow_tie (35× used)
74. wolf (35× used)
75. shark_attack (34× used)
76. ramen (33× used)
77. anniversary_4 (33× used)
78. top_hat (32× used)
79. cyborg_2 (31× used)
80. country_nl (29× used)
81. astronaut (29× used)
82. ghost (27× used)
83. whale (26× used)
84. scuba_diver (24× used)
85. monkey (22× used)
86. blue_dinosaur (22× used)
87. treasure_chest (22× used)
88. science_adept (21× used)
89. rabbit (21× used)
90. tiger (21× used)
91. firefox (21× used)
92. festive_lights (21× used)
93. mecha (20× used)
94. bandit (19× used)
95. apple (19× used)
96. spy (19× used)
97. curious_bot (18× used)
98. burger (18× used)
99. country_us (18× used)
100. bee_costume (18× used)
101. cow (17× used)
102. block (16× used)
103. pig (16× used)
104. country_de (16× used)
105. fairy (16× used)
106. burglar (14× used)
107. polar_bear (14× used)
108. pirate (14× used)
109. banana (14× used)
110. bunny_costume (13× used)
111. country_fr (13× used)
112. dinosaur (13× used)
113. boby (12× used)
114. hamster (12× used)
115. country_il (12× used)
116. cardboard_box (11× used)
117. country_gb (11× used)
118. country_au (11× used)
119. shape (11× used)
120. leprechaun (10× used)
121. carrot_costume (10× used)
122. country_se (10× used)
123. country_pl (10× used)
124. graffiti (10× used)
125. steampunk (10× used)
126. lifeguard (9× used)
127. country_fi (9× used)
128. country_be (9× used)
129. cowboy (8× used)
130. buffalo (8× used)
131. unicorn (8× used)
132. fossil (8× used)
133. firefighter (8× used)
134. country_ro (7× used)
135. country_no (7× used)
136. pineapple (7× used)
137. country_it (7× used)
138. country_cz (7× used)
139. mark (6× used)
140. sailor (6× used)
141. red_cocoa (6× used)
142. country_gr (6× used)
143. nutcracker (6× used)
144. jailbreak (5× used)
145. popcorn (5× used)
146. green_cocoa (5× used)
147. artist (5× used)
148. country_es (5× used)
149. country_ca (5× used)
150. country_si (4× used)
151. yellow_crown (4× used)
152. country_ru (4× used)
153. country_hu (4× used)
154. country_ch (4× used)
155. country_hr (3× used)
156. ewc26_referee (2× used)
157. ewc26_purple_swag (2× used)
158. ewc26_meowmeloen (2× used)
159. ewc26_med_bros (2× used)
160. ewc26_mapper_grey (2× used)
161. ewc26_durr (2× used)
162. alice (2× used)
163. ewc26_the_french_baguettes (2× used)
164. ewc26_team_vanguard (1× used)
165. ewc26_team_egorpro (1× used)
166. ewc26_svenk_ok (1× used)
167. ewc26_real_slovenia_team_w (1× used)
168. ewc26_psw (1× used)
169. ewc26_no_clue (1× used)
170. ewc26_im_bad (1× used)
171. ewc26_glitch_frogs (1× used)
172. blue_crown (1× used)
173. ewc26_drip_too_hard (1× used)
174. ewc26_bob (1× used)
175. ewc26_bdg (1× used)
176. ewc26_batman_underwear (1× used)
177. ewc26_anis_don_demina (1× used)
178. ewc26_andromeda (1× used)
179. ewc26_4ua2 (1× used)
180. ewc26_42ktrophygang (1× used)
181. stinger (1× used)
182. ewc26_trans_rights (1× used)
183. ewc26_titans_of_asgard (1× used)
184. alfie (1× used)
185. ewc26_the_saints (1× used)
186. ewc26_the_green_gang (1× used)