Click read more for the list of animators and sources.
The 1st song is 99 by MOB CHOIR, the 2nd song is Refrain Boy by All Off.
I made and uploaded this video a long time ago, but it was taken down from YouTube.
Note: Information about who the animators are is usually taken from sakuga.yshi.org/. If I or the website have guessed who the animator is there is a (?) next to the animator’s name. If you see that I’ve credited the wrong animator, please let me know in the comments and I’ll correct it.
List of animators and sources:
0:00-0:10- Shin Ogasawara (Ep 1)
0:10-0:18- Takuji Miyamoto (Ep 12)
0:19-0:24- Keiichiro Watanabe (Ep 1)
0:25-0:28- Yoshimichi Kameda (Ep 1)
0:29-0:40- Itsuki Tsuchigami (Ep 3)
0:42-0:56- Shin Ogasawara (Ep 5)
0:57-1:01- Yoshimichi Kameda (PV)
1:02-1:06- Unknown (Ep 5)
1:07-1:25- Hiromitsu Seki (?) (Ep 5)
1:26-1:43- Tomohiro Shinoda & Yuuto Kaneko (Ep 8)
1:44-2:13- Itsuki Tsuchigami, Kazuto Arai & Shin Ogasawara (Ep 10)
2:14-2:24- Tomohiro Shinoda/Yuuto Kaneko &Unknown (Ep 8)
2:25-2:42- Kosuke Kato (Ep 8)
2:43-3:12- Yutaka Nakamura (Ep 8)
3:13-3:17- Yuuto Kaneko (Ep 11)
3:18-3:53- Hakuyu Go (Ep 11)
3:54-4:06- Yuuki Igarashi (Ep 10)
4:07-4:12- Takeshi Mitani (Ep 9)
4:12-4:31- Hakuyu Go & Naoki Miyajima (Ep 11)
4:32-4:49- Hironori Tanaka (?) (Ep 1)
4:50-5:15- Yutaka Nakamura, Gosei Oda, Norifumi Kugai, Kenichi Fujisawa & Nobuhiro Muto [The cuts are too short to label each animator, but a comment in this link explains who drew what: https://sakugabooru.com/post/show/34174] (Ep 12)
5:16-5:42- Norio Matsumoto (?) (Ep 5)
5:42-5:48- Yuuki Igarashi (Ep 7)
5:49-6:08- Takashi Hashimoto, Yoshimichi Kameda & Yuuichi Takahashi (OP)
6:09-6:37- Yuuki Igarashi (Ep 12)
6:38-6:47- Unknown (Ep 5)
6:48-7:03- Yoshimichi Kameda & Yuutarou Suzuki (Ep 1)
7:03-7:16- Yoshimichi Kameda (OP)