156 known values for skin with current usage counts:

1. default (22402× used)
2. red (16770× used)
3. green (11241× used)
4. follower (4326× used)
5. clown (1180× used)
6. cool_cap (1139× used)
7. trapper (1112× used)
8. vampire (876× used)
9. lab_apprentice (803× used)
10. daisy (785× 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 (402× used)
17. gingerbread (306× used)
18. panda (228× used)
19. gift_box (222× used)
20. monk (214× used)
21. pumpkin (213× used)
22. black_dog (196× used)
23. og_purple (186× used)
24. dog (168× used)
25. builder (162× used)
26. anniversary_2 (162× used)
27. edm (160× used)
28. toaster (141× used)
29. demon (138× used)
30. tea_cup (129× used)
31. og_yellow (121× used)
32. cyborg_3 (109× used)
33. og_pink (108× used)
34. bad_cap (91× used)
35. reindeer (91× used)
36. cyborg_1 (90× 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. orca (63× used)
46. cubix (62× used)
47. narwhal (61× used)
48. joker (60× used)
49. grey_cat (60× used)
50. eliminated (60× used)
51. white_demon (56× used)
52. headset (54× used)
53. sushi (54× used)
54. yeti (52× used)
55. mummy (50× used)
56. cat (49× used)
57. peach (49× used)
58. rplace (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. angel (40× used)
66. siren (39× used)
67. ninja (39× used)
68. murica (39× used)
69. icefox (38× used)
70. bow_tie (38× used)
71. lunar_dragon (38× used)
72. wolf (35× used)
73. alien (33× used)
74. top_hat (31× used)
75. astronaut (31× used)
76. cyborg_2 (30× used)
77. country_nl (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. treasure_chest (20× used)
85. apple (20× used)
86. rabbit (19× used)
87. monkey (19× used)
88. science_adept (19× used)
89. country_us (18× used)
90. tiger (18× used)
91. blue_dinosaur (18× used)
92. bee_costume (18× used)
93. bandit (18× used)
94. scuba_diver (18× used)
95. bunny_costume (17× used)
96. block (17× used)
97. country_de (17× used)
98. firefox (16× used)
99. curious_bot (15× used)
100. cow (15× used)
101. banana (15× used)
102. pirate (14× used)
103. burger (14× used)
104. country_fr (14× used)
105. mecha (14× used)
106. polar_bear (13× used)
107. boby (13× used)
108. fairy (13× used)
109. dinosaur (13× used)
110. pig (12× used)
111. country_se (12× used)
112. country_pl (12× used)
113. shape (12× used)
114. country_au (11× used)
115. carrot_costume (11× used)
116. burglar (11× used)
117. spy (11× used)
118. country_gb (11× used)
119. leprechaun (11× used)
120. graffiti (10× used)
121. steampunk (10× used)
122. country_il (10× used)
123. fossil (9× used)
124. country_fi (9× used)
125. country_be (9× used)
126. country_no (8× used)
127. jailbreak (7× used)
128. unicorn (7× used)
129. pineapple (7× used)
130. country_ro (7× used)
131. firefighter (7× used)
132. mark (7× used)
133. country_cz (7× used)
134. cardboard_box (6× used)
135. hamster (6× used)
136. country_it (6× used)
137. nutcracker (6× used)
138. country_hu (6× used)
139. country_gr (6× used)
140. red_cocoa (6× 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. cowboy (3× used)
149. country_si (3× used)
150. stinger (3× used)
151. country_hr (3× used)
152. white_crown (1× used)
153. black_crown (1× used)
154. alice (1× used)
155. alfie (1× used)
156. laurel (1× used)