You got me curious so I did some looking around. Yoshinobu Takahashi has had insert cards in the Giants team sets every year he's been Giants manager but other than that I can't find any others.
I also noticed that Takahashi's base card isn't a common at card shops, much like Hara. Other managers (including Ramirez) are priced as commons. (Mint's 100-yen common price is an obvious exception to the Hara and Takahashi rule.)