Here is a list of skin with Catch the Beat elements.
If you found one that you want to share, feel welcome to edit this.
A[]
Android 4 Kitkat by -makoto yuki
B[]
Basic skin, the second innovation by vahn10
Blackout 2 by Lolzep
C[]
D[]
DJMax Osuka by Xiao
F[]
G[]
H[]
Hatsune Miku Test by elzapatoverde
I[]
IA - Aria on the Planetes by Elzapatoverde
K[]
Kagerou Project/Mekaku City Actors by elzapatoverde
L[]
Luminance - The Science of Color by Uruoki
M[]
N[]
NeOsu 5 (NeOsu Surge) by OsuMe65
O[]
Orange skin by Inori
R[]
S[]
Senki Zesshou Symphogear by Kurokami
Shingeki no Kyojin/ Attack on Titan by RA272Nirvash
T[]
東方Project - Hata no Kokoro by Elzapatoverde
東方Project - Hinanawi Tenshi by Elzapatoverde
U[]
Unbreakable Machine-Doll by Kurokami
V[]
- V O I D - by Ben_5917 Vocaloid Project Skin by NoClue