154 known values for skin with current usage counts:

1. default (21599× used)
2. red (16330× used)
3. green (10947× used)
4. follower (3969× used)
5. clown (1145× used)
6. trapper (946× used)
7. vampire (858× used)
8. lab_apprentice (798× used)
9. helmet_banana (556× used)
10. snowman (555× used)
11. og_white (469× used)
12. anniversary (447× used)
13. rural_fella (413× used)
14. cool_cap (409× used)
15. party_hat (395× used)
16. daisy (390× used)
17. gingerbread (308× used)
18. panda (232× used)
19. gift_box (228× used)
20. pumpkin (213× used)
21. monk (206× used)
22. black_dog (186× used)
23. og_purple (181× used)
24. dog (166× used)
25. builder (158× used)
26. anniversary_2 (157× used)
27. edm (152× used)
28. toaster (133× used)
29. demon (129× used)
30. tea_cup (121× used)
31. og_yellow (115× used)
32. og_pink (107× used)
33. cyborg_3 (101× used)
34. reindeer (90× used)
35. cyborg_1 (90× used)
36. elf (88× used)
37. grim_reaper (85× used)
38. green_spikes (83× used)
39. bad_cap (77× used)
40. detective (67× used)
41. wizard (65× used)
42. cubix (62× used)
43. evil_bot (61× used)
44. grey_cat (58× used)
45. joker (57× used)
46. mummy (56× used)
47. king (56× used)
48. sushi (54× used)
49. cat (51× used)
50. spikes (51× used)
51. mad_scientist (50× used)
52. peach (49× used)
53. headset (49× used)
54. yeti (48× used)
55. narwhal (46× used)
56. security_bot (44× used)
57. orca (44× used)
58. rplace (41× used)
59. fries (40× used)
60. siren (40× used)
61. white_demon (39× used)
62. lunar_dragon (36× used)
63. shades (35× used)
64. wolf (35× used)
65. ninja (35× used)
66. parrot (34× used)
67. angel (34× used)
68. murica (32× used)
69. ghost (30× used)
70. country_nl (30× used)
71. astronaut (27× used)
72. eliminated (27× used)
73. top_hat (27× used)
74. cyborg_2 (27× used)
75. bow_tie (27× used)
76. shark_attack (25× used)
77. apple (23× used)
78. festive_lights (22× used)
79. devil (21× used)
80. treasure_chest (20× used)
81. alien (19× used)
82. rabbit (19× used)
83. country_us (19× used)
84. country_fr (16× used)
85. scuba_diver (15× used)
86. bee_costume (15× used)
87. bandit (15× used)
88. tiger (15× used)
89. ramen (15× used)
90. curious_bot (15× used)
91. whale (14× used)
92. country_de (14× used)
93. bunny_costume (14× used)
94. blue_dinosaur (13× used)
95. country_il (13× used)
96. country_gb (13× used)
97. leprechaun (12× used)
98. pirate (12× used)
99. country_se (11× used)
100. carrot_costume (11× used)
101. boby (10× used)
102. block (10× used)
103. country_pl (10× used)
104. monkey (10× used)
105. country_be (10× used)
106. country_au (10× used)
107. country_fi (9× used)
108. country_cz (9× used)
109. dinosaur (9× used)
110. cow (9× used)
111. country_no (8× used)
112. country_it (8× used)
113. mark (8× used)
114. red_cocoa (8× used)
115. shape (7× used)
116. country_ro (7× used)
117. science_adept (7× used)
118. fairy (7× used)
119. spy (7× used)
120. pineapple (7× used)
121. country_gr (6× used)
122. country_es (6× used)
123. unicorn (6× used)
124. country_ca (6× used)
125. country_ru (5× used)
126. nutcracker (5× used)
127. firefighter (5× used)
128. icefox (5× used)
129. steampunk (5× used)
130. country_si (4× used)
131. green_cocoa (4× used)
132. country_hu (4× used)
133. alice (4× used)
134. mecha (4× used)
135. country_ch (4× used)
136. burger (4× used)
137. polar_bear (4× used)
138. graffiti (3× used)
139. banana (3× used)
140. yellow_crown (3× used)
141. country_hr (3× used)
142. popcorn (3× used)
143. hamster (3× used)
144. firefox (2× used)
145. artist (2× used)
146. alfie (2× used)
147. laurel (2× used)
148. cardboard_box (2× used)
149. pig (1× used)
150. black_crown (1× used)
151. fossil (1× used)
152. white_crown (1× used)
153. stinger (1× used)
154. burglar (1× used)