JCM 136: 1959 Maruten Blue Pitching Back

Shimabara

JCM 41: 1959 Pitcher Catcher Batter Back

Yamauchi

Katsuragi (the guide is missing the full # on the back)

Sakazaki (guide has this as #8657319)

3rd Place Inao - added 4/27/24

JCM 28a: 1957 Marukami Blue Ink, Color, 12 Pointed Star

Here's some uncatalogued ones I found on ebay:
Yasushi Kodama

JCM 27: 1957 Yamakatsu Color Borderless Grey Ink Backs

JCM 27: 1957 Yamakatsu Color Borderless is one of the first tobacco-style JCM card sets out there. There are over 69 cards, measuring 1 13/16"x3". The backs have side "arrow" designs, and a unique (though duplicated) menko number at the bottom. Below I've listed an uncatalogued card that I spotted on ebay.

Kazuhiro Yamauchi

JCM 53: 1956 Yamakatsu Borderless B&W

The two that I have, though, are uncatalogued as of yet. I'm also including below other uncatalogued ones I've found for sale on ebay.
Yasumitsu Toyoda

Yasumitsu Toyoda

Futoshi Nakanishi

JCM 58a?: Uncatalogued

This set isn’t in the current guide, but I’ve seen some people refer to it as “JCM 58a”. The front of the cards match the "JCM 16: Viking Set", and the back match the quiz back from “JCM 58 Flag Front”.
Gene Martin (unc)

Yukitsura Matsumoto (unc)

Masayuki Kakefu (unc)

Hisaaki Fukushima (unc)

Katsuhiro Nakamura (unc)

Yasushi Tao (unc)

Tsuyoshi Oshita (unc)