Wow, this is awesome, thanks for putting this together!
Some observations:
Monji Team is fascinating. It's been in charge of like all the axes with small cult followings. Noah's Notes, Red Sprite, Bozebeats, Last Saiyuki. Double Taisei likely about to join those ranks. The one non-HxH success in the team is Demon Slayer, and it looks like that editor took over around the time the pace of the story started rapidly increasing. It's like Monji Team is where you go to die, but at least you go out in style.
Iwasaki at Katayama team, Naito at Monji team, and Ikeda at Ikeda team currently aren't actively editing any manga. Maybe at least one of these editors will be in charge of a manga in the next batch.
Fukuda, a newcomer, suddenly getting Yuuna might mean that Yuuna is going to wrap up soon, and that editing its conclusion will be a way to settle Fukuda into the WSJ environment.
Man. This is cool info. I feel like I'm only half done picking it apart.