>>14106228None of them are Jannettys. But if you want to rank by their times as World champions, we can.
Muto won all three Heavyweight titles in Japan. Also held the NWA Heavyweight title. Had the best success in America out of the four.
Misawa won two of the Heavyweight titles, and the reigns he had as Triple Crown were heavily lauded. He also main evented the Nippon Budokan a total of 69 times.
Hashimoto is one of the greatest IWGP Heavyweight champions. His time as a main eventer came at the same time New Japan had the Dome Show spree, looked back very well. Left the promotion, became NWA Heavyweight champion, and created his own promotion, Zero-One. Of the Dome shows in 90's New Japan, he definitely was the biggest star.
Chono held the NWA Heavyweight title, and a reign as IWGP Heavyweight champion that ended as soon as it began due to injury. His main success came from tournament victories like the G1 Climax. He also has his own fashion line.
For actual Jannettys in Japan, they would be someone like the following: Masahiko Kimura, Toyonobori, Kintaro Oki, Tarzan Goto, Manabu Nakanishi, Yujiro Takahashi, Takeshi Rikio, and Masa Kitamiya.