I think it’s too early to judge Furukawa at this point. He’s just steering the ship that is the Switch and is preparing Nintendo for the future. From rumors on the specs of Switch 2 and what was supposedly said behind closed door at Gamescom, it should be at least interesting. Also, I think those who judge him based on what Iwata did in regards to charming consumers and being more open about Nintendo is a bit disingenuous. Furukawa is not Iwata, nobody is. If that’s not Furukawa’s forte, then he shouldn’t have to force it. Let Takahashi and Koizumi lead the way in directs. Let Miyamoto promote the movies and theme parks. Let the developers continue the Ask Developers interviews as they’re doing. Furukawa will stay within his strengths as CEO.
My ranking would probably go like this:
1) Yamauchi. He made it possible for Nintendo to not only make NES successful in Japan, but also in the US, where it was suffering a video game crash at the time. Franchises like Mario, Zelda, Metroid, Donkey Kong, etc., were established. NES dominated the market and became synonymous with gaming. SNES, Game Boy, and GBA continued the great successes. Unfortunately his policies, which were warranted at the time of the NES due to so many bad games releasing before (and even after) the NES, backfired on him when PlayStation took over the home console market and third parties fled Nintendo consoles for a time. He was strict and stern, for better or worse. It was fine when Nintendo was dominating, but when they were losing market share, he struggled to adapt. Fortunately, he was also willing to step aside for someone like Iwata.
2) Iwata. He did a great job getting Nintendo back on its feet and focused on the blue ocean market. While doubted, he was able to great extraordinary success that even Sony hasn’t even managed to reach. To have both DS and Wii sell over 100 million each lifetime is something we may not see ever again. Unfortunately, it backfired on him with Wii U and the 3DS, while successful, failed to reach the heights of the DS. Also, the YouTube program was under his watch. Not to mention, even during his tenure, Nintendo struggled to get with the times of online gaming. Still, he started Nintendo Directs, which are now a standard for online presentations. He was approachable and charming, which can be for better or worse depending on how you look at his track record. He was a developer before being president so he sympathized with the devs he worked with while as president. He left a great legacy, but it had his flaws that I think some tend to overlook whenever they talk about Nintendo being a@&holes nowadays.
3) Kimishima. Brief tenure, but did his job. Like Furukawa, it’s hard to really judge him because his tenure was so short. Nevertheless, he was the leader Nintendo needed during a time of transition. He oversaw the launch of the Switch and its eventual success. Otherwise, he didn’t really say much publicly like Iwata did. That’s fine though, because that wasn’t really his thing.