Video that shows most of Couching Idles (And also normal Idle animations) already exist by RoBoBOBR BoOZy :
   • Guilty Gear Xrd -SIGN- idle animations  
But it was made for SIGN so its missing Few Characters.

Raven try not have the best animations in the game.

It took me so much will power not to put Jack-O Pose on the thumbnail.

00:00 Sol Badguy
00:03 Sol Badguy (Dragon Install)
00:05 Ky Kiske
00:08 Ky Kiske (Hair Down)
00:12 May
00:15 Faust
00:19 Potemkin
00:23 Chipp Zanuff
00:26 Zato-1
00:29 Millia Rage
00:32 Axl Low
00:34 Baiken
00:38 Johnny
00:41 Venom
00:46 Jam Kuradoberi
00:50 Dizzy
00:55 Slayer
00:59 I-No
01:03 Sin Kiske
01:06 Raven
01:12 Bedman
01:16 Leo Whitefang
01:19 Ramlethal Valentine
01:22 Elphelt Valentine (SIGN Outfit)
01:30 Elphelt Valentine (REV Outfit)
01:37 Jack-O'
01:42 Kum Haehyun
01:46 Answer