No. 56 is Somubu Somuka Yamaguchi Roppeita by Norio Hayashi & Yamaguchi Roppeita, which started in 1986 and ended in 2016 with 81 volumes & 731 chapters in Big Comic
No. 64 is Marugoshi Deka by Ken Kitashiba & Michio Watanabe, which started in 1986 with 75 volumes & 395 in Weekly Manga Sunday Jiysugyo no Nihon Sha.
No. 87 is Jingi by Ayumi Tachihara, but it doesn't have the amount of volumes or release date it says in Young Champion Akita Shoten.
No. 83 is Direful Industrial Volleyboys is Hiroyuki Murada, which started in 1989 with 67 volumes & 711 chapters in Weekly Young Magazine Kodansha.
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Anilist Sync