157 known values for skin with current usage counts:

1. default (22396× used)
2. red (16768× used)
3. green (11239× used)
4. follower (4327× used)
5. clown (1181× used)
6. cool_cap (1137× used)
7. trapper (1111× used)
8. vampire (876× used)
9. lab_apprentice (804× used)
10. daisy (776× used)
11. helmet_banana (553× used)
12. snowman (549× used)
13. og_white (476× used)
14. anniversary (453× used)
15. rural_fella (414× used)
16. party_hat (401× used)
17. gingerbread (306× used)
18. panda (228× used)
19. gift_box (222× used)
20. monk (213× used)
21. pumpkin (213× used)
22. black_dog (197× used)
23. og_purple (186× used)
24. dog (168× used)
25. builder (163× used)
26. anniversary_2 (162× used)
27. edm (158× used)
28. toaster (141× used)
29. demon (137× used)
30. tea_cup (128× used)
31. og_yellow (121× used)
32. cyborg_3 (109× used)
33. og_pink (108× used)
34. bad_cap (92× used)
35. cyborg_1 (90× used)
36. reindeer (89× used)
37. grim_reaper (88× used)
38. green_spikes (85× used)
39. elf (83× used)
40. detective (75× used)
41. king (71× used)
42. evil_bot (69× used)
43. wizard (66× used)
44. mad_scientist (64× used)
45. white_demon (64× used)
46. orca (63× used)
47. cubix (62× used)
48. narwhal (61× used)
49. grey_cat (60× used)
50. joker (60× used)
51. eliminated (59× used)
52. headset (55× used)
53. sushi (54× used)
54. yeti (52× used)
55. mummy (50× used)
56. peach (49× used)
57. rplace (49× used)
58. cat (49× used)
59. spikes (48× used)
60. parrot (45× used)
61. shades (45× used)
62. anniversary_3 (45× used)
63. security_bot (44× used)
64. fries (40× used)
65. murica (40× used)
66. angel (40× used)
67. bow_tie (38× used)
68. lunar_dragon (38× used)
69. icefox (38× used)
70. siren (37× used)
71. ninja (37× used)
72. wolf (36× used)
73. alien (33× used)
74. astronaut (31× used)
75. top_hat (31× used)
76. country_nl (30× used)
77. cyborg_2 (30× used)
78. ghost (28× used)
79. devil (28× used)
80. whale (26× used)
81. shark_attack (25× used)
82. ramen (24× used)
83. festive_lights (22× used)
84. apple (21× used)
85. treasure_chest (20× used)
86. science_adept (19× used)
87. monkey (19× used)
88. rabbit (19× used)
89. tiger (18× used)
90. country_us (18× used)
91. blue_dinosaur (18× used)
92. bee_costume (18× used)
93. bandit (18× used)
94. bunny_costume (17× used)
95. block (17× used)
96. country_de (17× used)
97. scuba_diver (16× used)
98. firefox (16× used)
99. banana (16× used)
100. curious_bot (15× used)
101. cow (15× used)
102. shape (15× used)
103. mecha (15× used)
104. boby (14× used)
105. country_fr (14× used)
106. polar_bear (13× used)
107. burger (13× used)
108. pirate (13× used)
109. pig (12× used)
110. spy (12× used)
111. country_se (12× used)
112. fairy (12× used)
113. burglar (11× used)
114. country_pl (11× used)
115. country_gb (11× used)
116. dinosaur (11× used)
117. leprechaun (11× used)
118. country_au (11× used)
119. carrot_costume (11× used)
120. steampunk (10× used)
121. country_il (10× used)
122. country_be (10× used)
123. fossil (9× used)
124. country_fi (9× used)
125. graffiti (8× used)
126. country_no (8× used)
127. unicorn (8× used)
128. pineapple (7× used)
129. country_ro (7× used)
130. firefighter (7× used)
131. mark (7× used)
132. country_cz (7× used)
133. cardboard_box (6× used)
134. country_it (6× used)
135. nutcracker (6× used)
136. country_hu (6× used)
137. country_gr (6× used)
138. red_cocoa (6× used)
139. jailbreak (6× used)
140. hamster (5× used)
141. country_es (5× used)
142. country_ca (5× used)
143. buffalo (4× used)
144. green_cocoa (4× used)
145. country_ru (4× used)
146. country_ch (4× used)
147. popcorn (3× used)
148. stinger (3× used)
149. cowboy (3× used)
150. country_si (3× used)
151. country_hr (3× used)
152. blue_crown (2× used)
153. alfie (2× used)
154. black_crown (1× used)
155. alice (1× used)
156. white_crown (1× used)
157. laurel (1× used)